He's got a tough road ahead.
Here's the NY law on the subject, so we can keep this informed:
S 35.15 Justification; use of physical force in defense of a person.
1. A person may, subject to the provisions of subdivision two, use
physical force upon another person when and to the extent he reasonably
believes such to be necessary to defend himself or a third person from
what he reasonably believes to be the use or imminent use of unlawful
physical force by such other person, unless:
(a) The latter`s conduct was provoked by the actor himself with intent
to cause physical injury to another person; or
(b) The actor was the initial aggressor; except that in such case his
use of physical force is nevertheless justifiable if he has withdrawn
from the encounter and effectively communicated such withdrawal to such
other person but the latter persists in continuing the incident by the
use or threatened imminent use of unlawful physical force; or
(c) The physical force involved is he product of a combat by
agreement not specifically authorized by law.
2. A person may not use deadly physical force upon another person
under circumstances specified in subdivision one unless:
(a) He reasonably believes that such other person is using or about to
use deadly physical force. Even in such case, however, the actor may not
use deadly physical force if he knows that he can with complete safety
as to himself and others avoid the necessity of so doing by retreating;
except that he is under no duty to retreat if he is:
(i) in his dwelling and not the initial aggressor; or
(ii) a police officer or peace officer or a person assisting a police
officer or a peace officer at the latter`s direction, acting pursuant to
section 35.30; or
(b) He reasonably believes that such other person is committing or
attempting to commit a kidnapping, forcible rape, forcible sodomy or
robbery; or
(c) He reasonably believes that such other person is committing or
attempting to commit a burglary, and the circumstances are such that the
use of deadly physical force is authorized by subdivision three of
section 35.20.
S 35.20 Justification; use of physical force in defense of premises and
in defense of a person in the course of burglary.
1. Any person may use physical force upon another person when he or
she reasonably believes such to be necessary to prevent or terminate
what he or she reasonably believes to be the commission or attempted
commission by such other person of a crime involving damage to premises.
Such person may use any degree of physical force, other than deadly
physical force, which he or she reasonably believes to be necessary for
such purpose, and may use deadly physical force if he or she reasonably
believes such to be necessary to prevent or terminate the commission or
attempted commission of arson.
2. A person in possession or control of any premises, or a person
licensed or privileged to be thereon or therein, may use physical force
upon another person when he or she reasonably believes such to be
necessary to prevent or terminate what he or she reasonably believes to
be the commission or attempted commission by such other person of a
criminal trespass upon such premises. Such person may use any degree of
physical force, other than deadly physical force, which he or she
reasonably believes to be necessary for such purpose, and may use deadly
physical force in order to prevent or terminate the commission or
attempted commission of arson, as prescribed in subdivision one, or in
the course of a burglary or attempted burglary, as prescribed in
subdivision three.
3. A person in possession or control of, or licensed or privileged to
be in, a dwelling or an occupied building, who reasonably believes that
another person is committing or attempting to commit a burglary of such
dwelling or building, may use deadly physical force upon such other
person when he or she reasonably believes such to be necessary to
prevent or terminate the commission or attempted commission of such
burglary.
4. As used in this section, the following terms have the following
meanings:
(a) The terms "premises," "building" and "dwelling" have the meanings
prescribed in section 140.00;
(b) Persons "licensed or privileged" to be in buildings or upon other
premises include, but are not limited to:
(i) police officers or peace officers acting in the performance of
their duties; and
(ii) security personnel or employees of nuclear powered electric
generating facilities located within the state who are employed as part
of any security plan approved by the federal operating license agencies
acting in the performance of their duties at such generating facilities.
For purposes of this subparagraph, the term "nuclear powered electric
generating facility" shall mean a facility that generates electricity
using nuclear power for sale, directly or indirectly, to the public,
including the land upon which the facility is located and the safety and
security zones as defined under federal regulations.
S 35.25 Justification; use of physical force to prevent or terminate
larceny or criminal mischief.
A person may use physical force, other than deadly physical force,
upon another person when and to the extent that he reasonably believes
such to be necessary to prevent or terminate what he reasonably believes
to be the commission or attempted commission by such other person of
larceny or of criminal mischief with respect to property other than
premises.
35.30
4. A private person acting on his own account may use physical force,
other than deadly physical force, upon another person when and to the
extent that he reasonably believes such to be necessary to effect an
arrest or to prevent the escape from custody of a person whom he
reasonably believes to have committed an offense and who in fact has
committed such offense; and he may use deadly physical force for such
purpose when he reasonably believes such to be necessary to:
(a) Defend himself or a third person from what he reasonably believes
to be the use or imminent use of deadly physical force; or
(b) Effect the arrest of a person who has committed murder,
manslaughter in the first degree, robbery, forcible rape or forcible
sodomy and who is in immediate flight therefrom.
5. A guard, police officer or peace officer wo is charged with the
duty of guarding prisoners in a detention facility, as that term is
defined in section 205.00, or while in transit to or from a detention
facility, may use physical force when and to the extent that he
reasonably believes such to be necessary to prevent the escape of a
prisoner from a detention facility or from custody while in transit
thereto or therefrom.
