That happened way before BVP was in fort collins... I think that was either 1998 or 1999, Van Pelt didn't play against CU until 2001 at least, and didn't start until 2002.
That's right. The tear gas happened because CSU beat CU for the first time in 12 years. And while I certainly don't condone the behavior of the CSU fans at that game that precipitated the tear gas, if you look at it objectively, you'll see that it was a monstrous overreaction by the DPD. DPD was not prepared for a group of 20,000 raucus, drunken college students. All it knew was raucus, drunken Bronco and Avs fans rioting in the streets. Had they simply gone in and arrested a couple of the troublemakers, the whole thing would have settled down in about one minute.