I would be interested in your opinion on labeling antifa as a domestic terror group. I think it is a bad idea. As well as the new legislation concerning white supremacists. I think it is a dangerous path.
Labeled by who? By the government? By some self-appointed advocacy group like a right-wing equivalent of the Southern Poverty Law Center?
I'm wary of the government labeling groups as terrorist groups, since it can be abused to chill the right of free speech and association. There are exceptions, of course, but the label should be applied sparingly. Individual members who commit or incite acts of violence are another matter. Violence in the name of a political crusade is no excuse. Free and vigorous debate in the public square does not include vandalism or violence.