Gays and LBGT represent , at best about 10% of the population. If surveyed I'm sure the vast majority of tax paying public would agree with the police union.
As for calling Black Lives Matter an anti-racist group , that's laughable . That's like calling ISIS 's and Al-Aquada's version of Islam , a religion of peace. 
There are hate mongers complaining that BLM is giving them a bad reputation.