Complaints against the right are usually about their actions, the terrible consequences and how they hurt people.
Complaints against the left are often how it makes the complainer feel, it's a mental struggle to not admit they like the result of right wing policies and not being able to embrace a left wing position despite knowing on some level that they should.
It's self-righteous to say they care about other people but want to help those people with other people's money, not their own. Statistically speaking leftists give far less to charity.