Put them down, that's what. These riots were akin to the violence committed by Hitler's SA, Mussolini's blacks shirts, and Mao's Red Guard. They are designed to intimidate all opposition into silence, since authoritarian movements cannot co-exist with dissent.
Schools turning out these radicals need to be de-funded. No more alumni mega-donations.
Most MSM sources need to be fully and totally boycotted.
But, ultimately, this is a spiritual battle. We have to pray and fast for the US (or if you're in Canada, Australia, or Europe, the same), so that western civilization can be fully restored.