Among other things.
This is very simple: this kind of violence is wrong and needs to be prosecuted.

Can you provide a link that shows that these guys have been engaged in ongoing violence? That they've been continuously committing violence against federal agents, as you suggested, for example?

When people were committing criminal and violent acts during the June riots, the police swept in and disbursed the crowd - and arrested a bunch of people. Prosecutions have followed:

justice.gov - Six defendants charge assaulting federal offices other offenses during protests near

But unless the folks doing the protests in the 100 days that followed have also been engaged in violent acts, they can't be arrested or prosecuted for violent crimes. So saying "this kind of violence" wouldn't apply to them.

It’s so pathetically telling how so many people just can’t come out and say that.

Violence is wrong and should be prosecuted. Protest is not wrong and cannot be prosecuted. Protest that involves non-violent crimes (like congregating without a permit or violating a noise ordinance) can sometimes be wrong and should sometimes be prosecuted but sometimes should not.

It's so pathetically telling how so many people can't recognize the distinction between those situations.