Theory Versus Reality.
Theories are written in books. But theories put into action often end in disaster. Marxists love to ignore the reality that their defective, destructive ideology creates. But the photos of millions of victims are always there to remind the sane among us that Marxism, whether called socialism or communism, is a poison to society and must never be accepted or tolerated.
Hiding behind books full of promises won't bring back all the lives that have been cut short by the lies of madmen.