This is one more demonstration that banning guns will not end crime.
Banning knives won't end murder either. Even being in prison only slows criminals down: Seven inmates brutally killed with knives in South Carolina prison unrest
Most of the victims appeared to have died as a result of stabbings or slashings with homemade knives, known as “shanks”. The weapons are ubiquitous within South Carolina’s 21 prisons. “Put simply, anyone who can has a knife"