They got away lightly with that sentence, it should have been longer.
You can't be allowed to treat fellow human beings in such a deplorable way. It really makes me angry when I see news like that.
The perpetrators have been brainwashed and Religion is to often used to excuse such behaviour, but there is no excuse on earth to justify that treatment.
Now, if their God dislikes someone just because of their chosen sexuality, I hope their God has the same views on people who treat others disgracefully.
I hope they get their Karma.