No, shitposting is what 4chan does with Pepe.
Shilling is cointelpro to break the people. Shitposting is trolling to break the tyrants hold on the people.
This moment with Hillary is a perfect epitome, the ultimate example of real life shitposting. So measure your definition of it from this.
Trolling is fun. And Shitposting is a riot
https://m.youtube.com/watch?v=-fbnSj_lt9Q