Some leftist communities worship Marx, Lenin, Stalin, Trotsky, Mao, Ho Chi Minh, Pol Pot and others, whose actions led to murder of tens of millions of people.

Some leftist communities worship Marx, Lenin, Stalin, Trotsky, Mao, Ho Chi Minh, Pol Pot and others, whose actions led to murder of tens of millions of people. Why should we allow any of them to exist?