Slander is, yes. If you can prove its truthful it's OK, if it's provably false it's illegal, and you can take the offending party to court. Edit - publicly in

Slander is, yes. If you can prove its truthful it's OK, if it's provably false it's illegal, and you can take the offending party to court. Edit - publicly insulting someone often falls into slander, depending on what was said. In Canada all charges are pressed by the crown, so to a certain degree they decide what's what. In general, if there's the possibility of damages arising from the insults, it can be prosecuted. Edit2 - here's an interesting one for you: http://www.cbc.ca/news/canada/montreal/insulting-police-online-banned-by-granby-que-bylaw-1.3061023 http://www.cbc.ca/news/canada/montreal/insulting-police-onli...