For me I'm thinking it's either banning routine infant circumcision (or more broadly minor circumcision - many Muslim and African countries practice circumcision later in life) or the US "justice" system unfairly has too many black men incarcerated. The former maybe being a bit less irrefutable due to all the bogus science surrounding it, but offers a clear solution.

I am interested in this because these positions with the strongest defenses can be ones spent more time people getting on our side.

In people's minds, black men can be changed into all men especially black ones, and from there it allows an easier path to supporting males vs. something more difficult like trying to defend some position about dating and male loneliness first.