Leftists murdered some 168 million people from 1900-1987

China 90 million
USSR 61 million
Nazi  20 million
Cambodia 1.5 million
Vietnam 1.7 million 
Poland 1.6 million
Yugoslavia 1.1 million
North Korea 1.7 million
Mexico 1.4 million
Albania 100k
Bukgaria 100k
East Germany 70k
Angola 125k
Ethiopa 148k
Iraq 187k
Mongolia 100k
Mozambique 198k
Cuba 11k
It goes on and on...

How can you possibly ignore that mass murder?