when and why did the LGBT organization become so vocal and popularized? are they also behind a lot of the past antifa/BLM protets/riots ?

LGBT is not affiliated with BLM or antifa.  and actually, there is NO LGBT "organization" 

No, I don’t think the LGBTQ community overall is affiliated with Antifa, but some of them might be. I would imagine most of LGBTQ folks are BLM supporters though. Antifa is radical left, while LGBTQ and BLM are not all radical leftists. 

You can ask the same thing about women's suffrage, civil rights, equal rights etc. Groups of people get tired of inequality/oppression so they engage in activism that eventually becomes a movement f/ enough support. You sound like the people who have been oppressing them. Why do you support the inequality? Typically, people like you think the group inferior and are right wing.

"They" (unidentified) "seem to be troublemakers" - well that is a fine unsupported accusation based on absolutely nothing. How long before you suggest that "they" should be stripped of their rights and taken away for re-education?

Stop it. Stop it now.

They demand SPECIAL rights and SPECIAL privileges.

Remember, the squeaky wheel gets the grease.

If someone is ramming it down your throat, at least that's considered safe sex.