I'm not sure what your news sources are but I haven't seen anyone, right or left, call for physical violence to the other. There has been violence done "in the name of" the right or left, but Donald Trump cannot and should not be blamed for Charlottesville and Bernie Sanders cannot and should not be blamed for the 2017 Congressional baseball shooting. And if either side had they should be arrested, but it doesn't happen. And no, dog whistling is not a thing. That argument is a non-starter and is the sign of someone trying to warp the language to best fit their ideals.

So for the things that are non-physically violent: the right certainly has it's problems but to suggest that the left, and especially the most extreme versions of it, isn't doing underhanded or otherwise despicable things (like when YouTube demonetizes channels or Twitter shadow bans accounts) is willingly turning a blind eye. At least with the NRA someone on the left knows where they stand. Google/YouTube/Facebook/Twitter and now maybe Reddit seem to be taking a much more selective approach to how they apply their rules. And even those rules are hazy at best.