It's very much en vogue! But it's due to the natural result of increased communication. Thanks to the internet, more and more people are realizing that capitalism FUCKING SUCKS! At least in the form we have it in the USA.

The more people share their stories of how they were exploited by capitalism, the more anti capitalism sentiment grows. Sure, maybe some people are just doing it to be trendy, but I feel like the vast majority are jumping on the bandwagon because they actually care and want change.

The real question is how many are willing to do more than post about it! Donate, phone bank and canvas for your favorite anti-capitalist! Talk to your conservative friends(I live in MS, don't judge) about socialism and how it's cool and stuff!