If it wasn't clear, people aren't objecting to the use of automated tools to prevent crime. It's that there is absolutely no avenue of appeal or review against it even if the law enforcement exonerates them and a big news media reports it.

Google has inserted itself into almost all spheres of digital life by hook or crook. It's practically difficult to avoid them in many services - especially email. And now they play judge, jury and executioner. I don't understand any of these are acceptable, much less justifiable. The old argument 'think of the kids' used to justify digital authoritarianism is such a cliché by now.