Mayors are worried about state's new concealed weapons law overriding local bans on guns in parks and other public places. The gun law that takes effect today prohibits people from bringing concealed weapons into public buildings but doesn't restrict them from carrying them into outdoor areas such as parks, pools and bike paths. Until today, cities could pass local laws banning weapons from parks and recreation areas. Columbus Mayor Michael Coleman is calling the state concealed weapons law a "travesty." The director of the Ohio Parks and Recreation Association says officials are particularly worried about having weapons around youth sports events, where tempers often flare.