The contact who reached out to me is a Trotskyist, apparently. He said “We are Trotskyists” so I’m wondering if the whole organization is.

Their English home page doesn’t seem explicitly Trotskyist.

Their reading list contains Trotsky, which isn’t necessarily an immediate indicator, but the absence of anything by Stalin is concerning. It seems they’re using Plekhanov for Dialectical Materialism. I’m not familiar with him.