No law on earth can prevent someone from acquiring a weapon and killing members of the LGBT community, the difference is whether this is tolerated and/or endorsed by the state.

You provided a list of heinous crimes that in no way reflects the views of the United States.

To make it even clearer, recent LGBT violence is not even remotely relatable to the widespread lynchings of Black Americans (which you are invoking with this word) that was 'illegal' yet systemically tolerated in the early-mid 1900s.

Literally none of these LGBT crimes were associated with a mob proclaiming justice as was the case with historical lynchings.