If I can just add to that, I think it's very unlikely that that would occur. If the commission of the mischief is motivated by bias, and they have to show that as an essential element of the offence, why would the police charge somebody when they know there's less chance of a conviction than of their going through the regular general mischief section? I think that's very unlikely to happen.
On February 21st, 2017. See this statement in context.