Here's some additional information:
Common list of trigger warnings:
Imagine a world where every article you read is prefaced by warnings when any of those topics come up. Imagine kids in schools requiring warnings before reading books with this content, or listening to lectures, on these issues.
Imagine a world of kids growing up feeling like they need to be prepared, in advance, to discuss topics that come up all the time. Is this a better world where more healthy adults are being prepared in school, or a world where we're cranking out folks wholly unprepared to enter "the real world", or kids who are seeking to go out and rewrite "the real world" to put warning messages before potentially "emotionally reactive" messages are encountered.