I've already addressed your point. It's immoral to punish one group of people for someone else's actions.

It's not official policy of police to target lgbt, police management aren't condoning dodgy behavior and yes it's not easy to stamp out problem police. It's an ongoing process and always will be. Ergo it's silly to ban police from the march and sickening to see attacks on innocent police for something someone else did. Black and white thinking and not seeing someone's humanity is problematic.

Our justice system is based on punishment against individuals and not collectives. If you like the idea of collective punishment there are many other countries you can move to where that kind of thing is acceptable.

This is unfortunately another form of tribalism and us versus them mentality where there's really no need for it. The entire police force are not out to get LGBT in this country.

It is entirely possible to recognize the small pockets of problem police whilst at the same time celebrating and supporting those police doing good work. They aren't mutually exclusive.