Which Supreme Court you talking about?
This will not be going to the US Supreme Court.
State supreme according to the article.
And in this day and age, the USSC does whatever it pleases, as do all Federal judges. Anyone of which can and may still issue an illegal ruling that the rally must not proceed.
We are in a post constitutional and legal era. We are now in a dictatorship of the oligarchy (or proletariat if you prefer)