"We believe that the constitutional right to bear arms is primarily a collective one, intended mainly to protect the right of the states to maintain militias to assure their own freedom and security against the central government. In today's world, that idea is somewhat anachronistic and in any case would require weapons much more powerful than handguns or hunting rifles. The ACLU therefore believes that the Second Amendment does not confer an unlimited right upon individuals to own guns or other weapons nor does it prohibit reasonable regulation of gun ownership, such as licensing and registration."