Movies That Probably Require Trigger-Warnings?

I sat and read a commentary this past week over movies that need trigger warnings, and 'Gone With The Wind' came up.  Someone suggested that 10-percent of 18-year old kids (college kids)....would need a 'trigger-warning'.

I contemplated this.

'Kelly's Heroes', 'Ben-Hur', and 'Pale Rider'?  They would all require a trigger-warning.

To be honest, I suspect you'd have to attach a warning to 95-percent of movies made prior to WW II. 

True Grit I or II?  Both need trigger-warnings.

Stagecoach from 1939?  Yeah, you'd need a trigger-warning.

The Searchers? You'd need a double or triple trigger-warning for it.

That stupid Pacific Rim monster movie?  Yeah, there's a need for a trigger-warning for it.

That 1958 7th Voyage of Sinbad, with so much fake/bad acting?  Yeah....trigger-warming for the monster stuff.

Gremlins?  It might pass without a trigger-warning.  

The problem I have....so many people with that state of fragility existing....how can we help these poor people as they advance into their 30s, 40s and 50s with all the various movies that exist?