Why? Because the ”trans" activist was upset that the gay rights cause was doing too well. That's right: Her local LGBT rights campaigns were so successful that she'd been left with nothing to campaign against.
So she destroyed her own home, killed five helpless animals, and wasted an untold amount of local police and fire resources, all in the name of "raising awareness" — about a problem that didn't even exist, and get even more attention to herself.
It's horrifying. It's sad. And it proves that nothing is ever enough for "progressives." Don't they understand that instead of increasing sympathy for their cause, these hate crimes in fact make others less likely to join your cause?