At the same time though, the antics might be an "annoyance" but it's really not that much worse than the kinds of disruptions the community dished out to the mainstream back in the 80s. It's fairly mild - and they did try to make it fab with the rainbow smokebombs, so kudos to them for that aspect of it.
What need to be understood is that police is not a monolithic organization - pull enough sh*t, and you'd basically embolden/empowers the worst of their lot (the racists, homophobes, etc) and give them a PR win - there is nothing more they'd like to see than to discredit those in the organization who'd advance reproachment, and better yet, see various groups at each others' throats (cue Blatch and Lorriestein in the article posted above). It would be wise to deny them that win.
AoD