While it is important to continuously argue for our gun rights, that's a long term fight. A more reachable goal in the short term would be to point to the uselessness of the gun bans, and how completely ineffective they would be at reducing crime. The 905 voting block, the people of Toronto and other large Metropolitan areas in the country, with few shooters or people who know anything about guns aren't going to be swayed to act or vote differently in the near future to support our right to shoot paper targets. BUT they would be concerned about effective measures to keep their neighborhoods safe, and pissed off about measures that do not keep them safe. If we could get through to people in the 905 that Trudeau is letting them down, if we can get them to realize that Trudeau and the Liberals are using the tragedies in these neighborhoods to push their anti-gun agenda, and take their votes, while not giving a damn about these communities, We can make headway, regardless of how these people feel about guns.
Basically, in the short term, we stand to gain more by proving the Trudeau Liberals policies will fail than we do arguing for our rights.