In the 1960s the democrat party, in the process of going crazy, decided to abandon the southern states and develop, through dependence on government programs, a captive base of minorities.
It was a strategic calculation the national democrats made, deciding that an amalgamation of minority groups would offset the electoral strength of the South.
One aspect of capturing that base was absolute support for any disruptions of any kind by these minority groups, including the use of federal troops.
Today, the democrat party probably recognizes that these smelly hippie hordes mostly don't vote, if they did they would represent a tiny niche, and huge numbers of people will vote in opposition to anything and anyone identified with the hippies. The Nixon-McGovern election is an example of that.
It's possible the democrat party will go even crazier, and allow themselves to be identified with the rioters. It would be great if that happened, but it's unlikely.