Speaking unironically, I don't think a distributed denial of service attack is a really justifiable means of protest in this situation, we have a perfectly usable and in many ways superior alternative, we're on the alternative right now. No dirty tactics needed. Nobody's imprisoned on Reddit. And cyberattack laws in many countries are often broadly worded enough that doing something like the video upload you described could conceivably open you to criminal liability.
But hey, don't let me stop you, I'm not your parent.