I thought I was using regular toothpaste. I didn't know Colgate had triclosan until I read it in another article about antibacterial soaps and their risks. The box does not say "antibacterial". Unless you know what triclosan is (I didn't), there's no reason to believe you are buying antibacterial toothpaste.
It does say "Antigingivitis" on the box, but that does not necessarily imply an antibacterial toothpaste. Crest also says "Antigingivitis", but they accomplish that with stannous fluoride rather than something like triclosan.