Aggression and/or theft causes every elective* problem (those not natural)- they are not the private domain of the State. It just so happens that, at least in America, people acting as "government" are the primary offenders. But certainly not the only ones.
Obviously, there is no problem that can't be made worse by adding some "government" to the recipe- and aggression and theft are prime examples.
(*Yes, all government-caused problems are elective by nature- someone chooses to cause the problem instead of choosing to not cause the problem. Sick, isn't it.)