The Campaign Zero agenda draws its strength largely from the fact that many of the policies it recommends are “best practices” taken from existing police agencies.

Details on each of the icons above can be found here, accompanied when appropriate by links to police departments that have already embraced a given reform.

Had Black Lives Matter merely raised awareness of unjust police killings with its street protests, the activist movement would’ve done its country a service: The fact that U.S. police officers kill orders of magnitude more people than their counterparts abroad is reason enough to regard policy changes as an urgent priority.

But awareness-raising often goes nowhere. In publishing Campaign Zero, the activists behind it have rendered two more services: for the country, they’ve injected themselves constructively into a hugely consequential policy debate; and for their allies, they’ve provided a plausible way to convert awareness and mobilization into real-world solutions that will help to save lives. Moreover, the reforms can be pressed locally by activists in almost every municipality in America.

These achievements arguably surpass anything that the Tea Party or Occupy Wall Street managed. And whatever Americans think about Black Lives Matter activists, they can now assess this reform agenda independently, on the merits of its proposals.

Yet Campaign Zero is most likely to succeed if Black Lives Matter activists are effective going forward. As someone who favors the vast majority of the proposed reforms, I’m invested in the quality of the movement’s tactics. Thankfully, the subset behind Campaign Zero is quite skilled at the inherently persuasive effort it has undertaken. Another important subset will continue to raise awareness with protests.

But elsewhere in the geographically diverse, horizontally organized Black Lives Matter movement, a third subset is pursuing change ineffectively and objectionably. Rather than trying to persuade, they’re aiming to target skeptics, adversaries and even weak allies with shaming, verbal attacks, and attempts to silence them.

This will hurt their cause and do much harm besides.

The latest exemplars of this misguided faction are students at Wesleyan University, a highly selective liberal arts school with a student-to-faculty ration of 8 to 1. Simply put, these activists are unwittingly harming Black Lives Matter, undermining liberal values, and mistreating fellow students who’ve done nothing wrong. Their error is rooted in an increasingly common misunderstanding of power in America. And Wesleyan’s student newspaper, The Argus, is their primary target.

Last week, its opinion section published an op-ed that critiqued the tactics of the Black Lives Matter movement. “Is the movement itself actually achieving anything positive?” the author asked. “Does it have the potential for positive change?” As he saw it, “They need to stand with police units that lose a member, decrying it with as much passion as they do when a police officer kills an unarmed civilian.”