There are Anti-Ice/Anti-Trump rallies all over the country Saturday - there must be tons in Colorado, you’re just loaded with Marxists.
Still, I might go out there afterwards to see if anything is running late. Though I seriously doubt it. I've noticed these tend to end promptly one hour after beginning, which I believe is due to the fact that they are paid AstroTurfing events. Truly spontaneous grass roots events aren't On The Clock.