I disagree with this. If a leftist didn't push so hard for the moral high ground in race relations, in immigration, in fiscal policy, in foreign policy it would

I disagree with this. If a leftist didn't push so hard for the moral high ground in race relations, in immigration, in fiscal policy, in foreign policy it would be much less relevant to point out hypocricy. A mistake is a mistake, but many times hypocrites go beyond 'mistakes' into complete logical inconsistency. We don't want inconsistent policies because they simply don't work.