The return of the Anonymous hacker collective

As the United States deals with widespread civil unrest across dozens of cities, "hacktivist" group Anonymous has returned from the shadows.
The hacker collective was once a regular fixture in the news, targeting those it accused of injustice with cyber-attacks.
After years of relative quiet, it appears to have re-emerged in the wake of violent protests in Minneapolis over the death of George Floyd, promising to expose the "many crimes" of the city's police to the world.
However, it's not easy to pin down what, if anything, is genuinely the mysterious group's work.