I realise that in some Islamic nations it is normal to kill a person who is discovered to be a homosexual and one member recently made such a statement on this site. I want to ask:
1) Do all Muslims think it is right to kill homosexuals?
2) Why is it ok to kill a homosexual who is only committing sin to himself while a man can rape a woman (for example), which is involving an innocent person, and not be killed?
3) What if the homosexual turned out to be a parent, sibling or your child? Would you want to kill them?
Killing persons who are guilty of homosexual acts is not something agreed upon between the scholars of Islam. Some scholars say the punishment can be jail, lash, or killing.
I'd like to clarify that it's not normal individuals and citizens who kill, I mean it's not like when I find a homosexual I go and kill him, no. There are laws, legal system and courts, it's treated like any other crime. It's not chaos or shouldn't be like this.
Homosexual practices are heavily frowned upon in Islam, it's going against our own humanity, it's deviation from the creation of Allah. And people of Lut who committed such sinful acts and refused to stop following this way were severely punished.
As for your questions;
1. I can't say what other Muslims think but as I said the death penalty is controversial between the scholars in the first place. Of course there are some deviants who call themselves Muslims and see that homosexuality should be allowed and the Qur'anic prohibition is out of date.
2. Who said so? The penalty of the rape crime reaches death of the rapist in many cases.
3. I am not authorized to kill anyone as I said before and I usually don't kill. :sarcastic
If he was someone close to me, I would try my best to advise and help him to seek spiritual and psychological help. That's what I would do.