I think this is normally the case. You get the screaming 10% (or whatever) on each end of the spectrum and the rest are not able to have a serious conversation. The problem becomes, in politics, when the representatives pander to those extremes
While we're on the topic of political metaphors, there's also the stalking horse, which IMHO is the role the Parkland victims are currently playing on behalf of Everytown and the gun-control contingent in Congress.