"When assault rifles are outlawed, only outlaws will have assault rifles."

The founding fathers enumerated the "right to bear arms" explicitly to give the people the ability to defend against tyranny and aggression, from government mostly, but not exclusively.

It was to keep the people safe, and the citizens a free people.

Removing guns of any kind is step 1) toward America truly ending in the form most people today believe it to exist, even though it hasn't existed that way for a century, to be replaced with a servitude model for the masses. No "freedom" at that point.