Here I am getting arrested.
The photog is not me. I was shooting the arrest of an AP Photographer (above) when the authorities also arrested me for good measure ... two is better than one, (the hand is attempting to physically stop me from taking photographs).
The odd part is that this was at an Angel baseball game, not a riot or protest or anything cool like that. I get harassed all the time, I've been detained a few times, rarely charged, never convicted.
@ the OP- I believe all your assertions to be spot on as to the criterium used to determine if a permit is required ... but, on the flip side, there is some requirement/responsibility on your end to know the law as well. As you were totally ignorant of said law, you were at a severe disadvantage when defending yourself to your oppressors. If it were I, when simple reason doesn't resonant with the immediate authority, (and when that that happen...), I'd request to speak to their superior.
While posting your frustrations on the internet is helpful in blowing off some steam, a letter to the elected officials/decision makers at the jurisdiction responsible for the park could be a course that produces a long term and positive effect on this problem.
The guy who accosted you was just doing what he was told/heard and was enjoying his day in the Sun exercising that power. At that level, it is sorta like arguing with a vending machine that gave you the wrong candy. Responses for authority, typically, doesn't get much better as you go up the food chain. But the odds for a rational response will increase the high up you go ... but be aware that you still need to find a 'superior' who actually gives a rat's about your situation and not also take the easy course of reading policy verbatim and acting within that context .... And ... that person has not to care about stepping on the toes of their underlings ... so if the stars line up appropriately, it could be resolved in your favor. Any misalignment and you have a ticket. I feel that by going 'upstairs' to superiors, at least I'm getting more Cluck-for-my-Buck, the authority is costing me time ... in return I'll try to cost them money as well and superiors make more money than underlings, advantage Gary.
I don't know how things work in Canada, but here if you really feel righteous over the incidence, then lodge a formal complaint with the jurisdiction. Call the local news outlets and forward them your story, send your story to everybody in the parks department (hopefully you have the names of the people you spoke with on the day of the confrontation), find a free attorney, sit down with an elected official. There are plenty of avenues you can take to correct this problem and further your cause.
I understand where the park owner is coming from, I see it nearly everyday. Commercial/Pro photogs setting up at parks and public places and using those venues as backdrops. (I live in LA ... can you imagine the mess that occurs when wedding and commercial photogs set up in Hollywood and the beaches, blocking pedestrians, yelling at them and taking over piers and tide pools from the general public. On top of it, these photogs probably don't even live in the city and pay nothing in taxes for the maintenance. It's a win-win for the photogs and a lose-lose for the city and city taxpayers and general public.) Out here all the entertainment venues have different rules, from the general no pro cameras, to no dSLRs, to no lenses longer than six inches to no cameras at all. Some like the Hollywood Bowl, have different rules depending on the event so you have to spend time looking to see which rules will be enforced for which event.
I can see the new ordinance coming down to limit public places to non-commercial photography/commercial-with-a-permit only. Those who are scheduled for enforcement most likely having similar questions as you ... "How can I tell the difference between a commercial photographer and a non-commercial photographer?" Someone pretty low in the food chain, someone who has no expertise in photography, coming up with a list of rules ... that list is now policy ... the underlings read and enforce that policy literally. Welcome to our world.