I'd say Jan 6, 2021. But there are so many examples between "bayonets" and now. 2020 Seattle CHOP, 2014/2016 Occupation of the Malheur National Wildlife Refuge, 2011 Occupy Wall Street, 1999 Battle in Seattle, 1992 Ruby Ridge Standoff, 1969 People's Park, the entire civil rights movement era, 1946 Battle of Athens, 1921 Battle of Blair Mountain.

I intentionally alternated between left wing / right wing events. These things aren't limited to one side, and they're somewhat frequent, if a bit cyclical.