> support, defend, ignore, or rationalize actions

So up until this point it was perfectly acceptable? Or is this only an issue when the wrong side does it in a fairly moderate way (since the other side regularly and openly embraces and encourages political violence).

For rational people, it has never been acceptable, it will never be acceptable.

However, some people support and vote for, a president who has told his supporters to perform acts of violence against those whose speech he disagrees with, clearly a portion of the population doesn't mind.