From the opposite side of the equation, Marxists embrace the LBGTQ movement because it is a useful tool.
Homosexuals are the tools and the Marxists are the tool wielders.
As an aside, the Marxists are also tools. Behind them is a collective cabal that is using the Marxists to establish a dictatorship. This cabal isn't interested in collectivism or politics. It is interested in pure power.
This was explained clearly by Chairman Mao (who was not a true believer in Marxist/Leninist doctrine) when he said that communism was just a way of strengthening his totalitarian grip on China by replacing the thousands of Chinese religions with one single ideology--communism.
And socialized medical care and of course Gun Control!
bmp
Ping.