Pre-Brexit, there were a lot of people that really wanted sovereignty.
Post-Brexit, it turns out that sovereignty didn't make a lot of those people happy, because it got in the way of their employment or business, and it turns out you can't eat sovereignty.
Same thing happened here. It's a lot easier to defend a despicable person's right to hold a protest when they're powerless. But when people start dying that gets a lot harder to justify.