How can we make it easier for students to report signs of potential violent behavior in their classmates, such as the Minneapolis school shooter?

What is one specific, unwritten signal or gesture you often see passengers use on Indian trains to communicate without speaking?
Why do some people think an apology will fix everything in a relationship, and why might that not be true?
What feeling do you always seek during a successful encounter?
Is Farage aware that boycotting the free press is one of the first signs of fascism? And that it is straight out of the Trump playbook?