What's not both sides. Some things are and some aren't. Using target graphics demonstrably is. The way our language works is that examples from extreme situations, usually physical violence and sex, become analogs used to represent other situations. That happened with targeting and pictures of bullseyes decades ago. And is used by both sides.

The actual inciting rhetoric, OTOH, is not coming from both sides to anything anywhere approaching the same degree. What the right is doing is shameful and destructive of democracy. There are examples on the far left and the blogosphere that could be found to make it seem like it's a 'both sides' thing, but as a true face of the movements, it is not.