The word racism

Saw this on the internet.

"The word "racism" is so amorphous, taking on whatever meaning its user wants it to have, that it's become nearly meaningless. ("A racist is someone who's winning an argument with a liberal.") Unless we're talking government-supported segregation or the like, the bogeyman of "racism" is just an attempt at mind control. It's also very useful for gaining and keeping power; liberals are quite alive in general to the fact that dictators or even democratically-elected leaders use the specter of enemies, external or domestic, to expand their power, so I wonder how it is that liberals don't see that constant evocation of "racism" functions effectively the same way. Of course, it's the liberals who gain power from this, so maybe that's why. Just as Oceania has always been at war with Eurasia, our society has always and will always be at war with racism."