My hometown recently had their first Pride festival (parade included). Nobody was half-naked. Nobody was rude. Everyone had a good time celebrating how far we have come (with regards to equality and acceptance). Your broad generalizations do nothing to further society's advancement.
These "obscene gestures" usually come from the larger, more popular parades (akin to Mardis Gras). That's just what happens when any group gets a chance to get together with large amounts of alcohol.
According to EU law, snail is a fish. Guess it's time to rewrite biology books or...
stop considering any organization as an ultimate source of truth. Truth can only be determined by oneself, if you take anything anybody says as a fact without analyzing it yourself you left your ratinality far behind.
This "mental disorder" you speak of doesn't make you any diffrent than other people, aside from what you are attracted to. Going around saying "They are sick, They can be fixed, it's a disease, fucked in the head, they're broken" makes it sound like there is something wrong with us similar to a psycopath lacking the ability to "feel". And there is nothing that makes us any of the above. It's like saying that blonde people are unnatrual and broken because they are not brunettes.
“The worst thing I can be is the same as everybody else. I hate that.”