What happens if the military and/or police start firing on these protesters with real bullets?

Scary! I believe that point is closer than perhaps it has been in living memory. The president shooting off that it is x or y and telling everyone that it's necessary to 'dominate' or you look like jerks, sure isn't conciliatory talk, or talk that's likely to resolve differences and reassure people.

National anarchy. Light the fuse...and watch it go! 

More people will die and there can only be one nearly winner and then years and years of people and so called police officers dying ...for those abused and forgotten,there can never be forgiveness...Things will never change ,until all past evil deeds are addressed correctly ....you can't ever have a two tier justice system...that only works with communism ..  

Death.

Well the first thing that will happen is Donald Trump will get his jollies (get off) after that he will  keep pushing and pushing untill it becomes the new normall and peacefull  protesting  will become a thing of the past. Cheers!

That happened in Syria and there's been a civil war there for the past nine years. 

It would be a huge mistake. We learned our lesson from Kent State.

they might kill a lot of people

Unlikely to happen,