Well... the part they quoted is a little misleading.

The two situations they talked about at least on the face of it were:

1. An undercover agent was in contact with someone, and sent them a link to something in the expectation they'd click it and then that undercover agent could track down what was the IP/identity of the person who clicked the link. Pretty standard stuff. The only weird part is that it was a stock Youtube link and they asked Google to be involved to give them identifying information after (and that for whatever reason there were 30,000 people who watched the video and they asked for the info about all 30,000).
2. Law enforcement got a bomb threat, then they learned that there had been a livestream of them while they were looking for the bomb. That doesn't automatically mean anything about the person who was livestreaming (maybe they just saw something exciting happening?), but wanting to talk with that person makes 100% sense to me.

So, to me both of those seem pretty reasonable. But of course the on-the-face-of-it explanation for #1 doesn't completely make sense for a couple of different reasons. But I wouldn't automatically class either of these as abuse by law enforcement without knowing more.