Also, having laws that prosecute people because something is "grossly offensive or of an indecent, obscene or menacing" is asking for trouble. It is very subjective and easily abused to prosecute basically anyone at any time.
The sad thing is that these laws are often the result of citizens calling on the government to "do something" about something they don't like or don't understand (and can't be bothered to). For politicians it's a cheap way to please voters and get elected next time. Too bad such laws are often the basis for totalitarian regimes.