Children recognize that there is not just one right view that is handed down by authorities. They conform to rules out of self-interest and consideration what others can do for them.
People developed their own set of moral guidelines, which may or may not fit the law. The principles apply to everyone. They do what they think is right regardless of legal restrictions or opinion of others.
LGBTQIA++ community are still being discriminated and just tolerated by the society, but certain someone thinks that they deserve better. Thus, they do everything to recognize the rights of the people of the minority.