bloodstained

adj

1. Stained, spotted or otherwise discolored with blood.
2. Having the color of something which has been stained with blood.
3. Responsible for the deaths of others; guilty of murder.

   “This self-delusion is even more the case with Trotsky, whose bloodstained intolerance is generally passed over because the 1960s student generation pretended then, and pretends still, that Trotsky was in some way a freedom-loving, Gulag-free alternative to Stalin.”

4. (broadly)Guilty of wrongdoing.