Re: California lawyer seeks to put "shoot the gays" proposal on 2016 ballot
He is probably aware that heterosexuals can and do engage in "sodomy" too. It´s kind of interesting that he specifically refers to it between same sex couples. Perhaps there's something Freudian going on here.
My guess is he was dumped by his boyfriend and went nuts.
Now seriously, in most western countries I know something like this would be considered hate speech or incitation to violence and he would be getting jail time for apology for murder.