The 25th Amendment?

At first Stalin sent opponents to Siberia or had them shot. But this tended to make martyrs of them. So Stalin decided to confine them in mental institutions. This made crazies of them, and undermined their ideas as well. Who wants to follow the advice of a lunatic?

Be careful when you call Trump crazy. You are starting on a path that leads to Stalin, and even dedicated Marxists don’t want that.