Leftists will pretend that they adamantly believe one thing and the next moment they will be dogmatic about the exact opposite. Frankly they are so disturbed that it's impossible to have a logical conversation with them. Which is why they often end up killing each other.

Not that rightists are really better, as they adhere to a logic of profit and self-interest, but they can't say it outward so they try to cover this with whatever excuse.