Data shows a surprising campus free speech problem

I think you're interpreting that paragraph from the article very uncharitably. Protesting against "offensive and racially charged speech" that is tailored to provoke the left because it goes against everything the left stands for is very different from silencing conservative speech in general. Why should "the left" allow offensive speech for the sake of free speech from the right? Is the right to be offensive and to perpetuate stereotypes and regressive viewpoints more important than the harm such speech causes?

I don't see where the left is "systematically" targeting high-profile speakers either considering that it's the speakers themselves and the conservative student groups provoking and trolling the campus left. I see this a great deal online, too, where right-wingers love to comment on left-leaning Twitter users' posts or Reddit threads to insult people, troll, and generally just provoke a response. Then they cite those posts as "evidence" that conservative speech is being censored online and that everyone on the left is polarized and unwilling to step out of their own echo chambers. It's really leftists not wanting to feed the trolls because doing so wouldn't lead to anything productive anyways.

The campus left wouldn't, for example, disrupt the meetings of the conservative student groups themselves, prevent conservative students from organizing, or encourage school administrations to ban harmless conservative viewpoints, for example. That's what I see as "systematically targeting" conservatism, not the the article is talking about.