Protests are an excellent time to gather signatures on petitions.
Feel free to sign any or all of the following list of online petitions opposing Bill C-38, the Omnibudget. [Note: I recommend the 1st 2, especially.]
Sneak attack on the environment
Green Party: C-38 Environment Devastation Act
Take A Stand Against Bill C-38
Defend Canada’s Democracy and Environment from Bill C-38 [note: this one requires javascript]
Liberal Party: Harper is ending environmental protection Petition
Prime Minister: Stop Bill C-38 and split it into smaller bills