Ideas for opposing a "Hell’s Angels parade"?

I’m doing a little role playing in school tomorrow and I need some ideas. I’m opposition. I have a few ideas (road will cause problems for people who need to go to work & will cause traffic in other roads), but I don’t think they’re good enough.

"The proponent of this application is representing a widely known Motorcycle club – The Hell’s Angels and has recently helped to form the Clayton Village Chapter. The representative would like council to temporarily close a section of a major roadway to allow a "chopper parage" to help to celebrate the North American jamboree that is being proposed. Those in favour will argue for the economic and social benefit to be accrued from the attraction of over 3,000 participants and their "families". Those opposed will effectively raise concerns. There is potential for a discrimination claim here."
Sorry, "parade" – not "parage".

So, The noise level of the motorcycles is in violation of noise control ordnance. The pay for the additional officer required to protect both the participants and the public puts a strain on the current budget. Hell’s Angel’s have many rivals amoung the other clubs that could cause issues. Many Hell’s Angel’s are convicted felons and are also points of interest in the local communities Gang Watch List.