His last words were that he couldn’t breathe.
When you have a cop ontop of you squeezing your windpipe suffocation happens.
And when you deprive oxygen to your heart heart attacks happen.
It’s funny how heart attacks, bullet holes, tazer burns, etc, never happen to suspects that carefully follow police orders. Refusal to submit to authority is always a recipe for disaster.
Put another way, his last words were an oxymoron.