"Sounds like you enjoy the taste of boot" is trivially against the site guidelines regardless of what view the commenter holds or how right they are or feel they are or you feel they are. Anyone can see that, no matter how passionately they hold their opinions.

HN has had tons of comments about police brutality including tons from what I assume is a similar view to your own. For a while it was by far the most-discussed topic on HN: https://news.ycombinator.com/item?id=23624962.