He told his students to go home and tell their parents.
They did.
He isn't teaching kid right now, and the fire dept. is after him too.
I advocate that it should be taken as an application for the sale of your citizenship on eBay. To qualified bidders only, of course.
You publicly burn the US flag, you should have to appear in court to disown that intention, or it should be imposed - and you should take the proceeds and find somewhere else to live. Action should also lie against TV broadcasters who intentionally broadcast a flag-burning demonstation - they should have to cover the resulting court case and should have to report the result of the auctioning of the citizenship, if it comes to that. And the coverage of the court case and the auction should be as extensive as the coverage of the original "speech."