"There is only one relevant question here. Would Toronto officials also consider to stop funding the gay parade, if pro-Israel (let`s say AIPAC) activists wanted to participate...???" If you weren't a moron, you'd realize that, in this case, there is a difference between being pro something and anti something. A better question would be would they consider stopping funding if there was an ANTI-Palestinian group involved. The answer should be a resounding, "Yes."
Magnitude 6.1 quake hits Panama-Colombia border (Reuters)
from the article: Anti-Israel group could cost Toronto Gay Pride parade its funding