Many Marxist Leninists are also anti police. I think Ruthy Wilson Gilmore and Angela Davis are the most famous of these (although at this moment Gilmore is more of a revolutionary than Davis). Gilmore's Golden Gulag is a good analysis of prisons, but I think her upcoming book will offer more of a program than Golden Gulag. Of those thinkers, who are anti police but think with Marx and Lenin, Robin Kelley is my favorite.

I suggest you look into them if you're thinking through these issues, since they all break out of the anarchist vs ML back and forth.