Salam Ilker
The incident that happened was absolutely mindless and cruel! Yes homosexuality can be thought of as sexual corruption but why single out homosexuality only, why fornication among heterosexuals is not asked to be billed as a crime by muslims in these countries as well? To God, a sin of sexual nature is a sin of sexual nature, as long as we do not make fornication among heterosexuals illegal as well, only focusing on LGBTQ issues is discriminatory! The verses of the Quran does not give death penalty for fornication or adultery even among heterosexuals. The punishment for homosexuality is not mentioned. It is to be decided by the judiciary and law enforcers of a country upon consultation with learned people of that field. Killing a person mindlessly is not justified. Sexual indiscretion in the Quran assigns lashes and house arrest sometimes but not death! Death is an option during murder but even the option of taking blood money and forgiving the person totally is offered by God. Death is also assigned in the verse u quoted but other options are also mentioned in the same verse!
The verse u quoted have given several other options, like that of exiling them, why not implement that? Why death or cutting? Whatever laws God has given, there is an opportunity for a test for both sinners and law enforcers! When someone does something bad, the sinner or criminal as well as law enforcers and policy makers are tested! This is not a test for only that person who commits the crime, if law enforcers trangress and cause undue harm to sinners, law enforcers have to answer to God!
Moreover, these laws are to be implemented by people in authority, not anybody else,even if u live in a muslim country, a trial has to take place and the judiciary will punish or sentence the sinner! No layman has the authority to punish or give verdict even in so called muslim countries. The crime has to be proven ( making use of eye witness, biological testing etc) and the sinner must be given an opportunity to present his/her side of the story, so that oppression of any kind can be avoided and people are not punished for crimes they have not committed. If u r living in a country where most people are non-beleivers and the law is designed not keeping spripture in mind then u have 2options:
a) respect the law of the country and in the meantime work with jurisdiction so that scriptural punishment becomes law of the land, if u cannot influence the law makers and policy makers peacefully, u have to follow the law of the land. Not following the law of the land is sin itself
b) emigrate to a different country
Under no circumstance can u take the law in ur own hands and cause atrocities because if u do that the same law will apply to u, that of causing undue unrest and corruption in society