I assume so, yeah. The "Last Generation" is a loosely organized activist group that has been making headlines in the country for the past months, and by my understanding these were known associates/members of the org. One of their things to do is to glue themselves down in places to hinder others, think at events, on streets, tracks, airfields, etc.

I don't know if there was concrete evidence of past crimes/actions for them. By my reading, Bavarian state law does not require this. In some other States, it is listed as one of the conditions to meet or "likely to repeat" is somehow baked into the lingo.