Did I say, or does this meme say, there is an alternative to working class revolution? No, I didn't, and it doesn't. This meme isn't even specifically about working class revolution. It's expressing the opinion that this act of violence against the bourgeoisie has shaken the bourgeoisie more than decades of peaceful organization, not that working class organization in general is bad. I have no idea where you got the idea that that was what this meme is saying, but it clearly isn't.