The left, the tolerant left.
Don't tolerate the untolerable
I think the notion of "tolerance" is misused in these contexts, and a more accurate term for how the left sees themselves would be "open-minded." Tolerance has something of a "thank you sir, may I have another one?" vibe to it, while being open-minded means you're willing to listen to arguments from competing view points, and bring many voices to the table, but doesn't mean you have to continue listening to them over and over again after they've expressed their viewpoints and arguments and you're still not convinced.
We were open-minded when Betsy DeVos gave her confirmation testimony. We were not impressed by it, and have no further reason to listen to her unless she wants to actually bring something new to the table.