If all this is happening legally, then I support it.
How exactly is 'legally' defined here?
From the POV of the government, those protestors are a pain in the ass and helping them would be called "illegal".
Using bitcoin to fund a rally is not good as it would be a bad precedent in other countries. This could lead to the stricter government on bitcoin and cryptocurrencies. Crypto was born for more convenient payment, not for any political purpose. I am very concerned.
Crypto is a currency, bad or good can be seen from different point of view. I'm pretty sure nobody have problems if you help people that are oppressed and live in fear due to dictatorship. Even if they ban crypto in general, P2P transaction is still possible. Instead of spending money with little results, I bet they'd rather legalize and get taxes from it.