The gunman that killed 4 people including a cop in NYC had a vaguely political motive apparently.
He was a former high school star football player who never went college/pro ball, but somehow blamed the NFL and claimed to have CTE, apparently latching onto the political furor over it in the years past. He had a rifle, pistol and tons of extra ammo apparently planning a large attack on the NFL headquarters in Manhattan, but took the wrong elevator and killed unrelated people at the offices of the building's management.
I mean this hasn't been a real left vs right political issue as much as others, but there's been a tinge to it. This guy was clearly a nutter and probably didn't actually have any real nexus to the NFL or CTE but had one of those schizo obsessions instead, but that's also been the case with a lot of politically/ideologically motivated terrorists given the demented mindset required. So there's certainly some kind of political angle here but its nothing as direct as the antifa / zizian / etc attackers we've seen recently, this guy was one of those oddball one-offs