This is because of bias and relativity.
Human beings are simple minded which entails projecting their inner thoughts and beliefs on others.
Thusly, right wingers project goodness and fair play on devils often; and, and it explains why leftist ‘projection tactics’ work so well on right wingers bumbling through life.
The left on the other hand are all too often psychopathic narcissists hell bent on getting their way and will do anything to make that happen.
They basically live by the Seven Deadly Sins, which is why they are ultimately doomed.
The meek shall inherit the earth says the Lord.
Cheers mate.