What do you think about registering your face as a trademark?
King Camp Gillette, an inventor and a founder of The Gillette Company, did it in 1906. You can find the Danish trademark with Gillette's face here: https://onlineweb.dkpto.dk/pvsonline/Varemaerke?action=109&sagID=VA%201906%2000575
The trademark is still active, so Gillette's face has legal protection even after almost century.
And you know what? On this image Gillette is with unshaven mustache! I mean, is this face appropriate for razor brand?
You are telling me, I could register my face and bring down every social network account with my picture?
Moreover, trademarks are registered for certain products, so you can have a trademark "Sad&Sunny" for such goods as beer, but Instagram guys usually don't think about it, they just block someone who use the designation "Sunny&Sad" in blog about drugs.
And it's a real problem, because business of many people depends on their social media blogs. Trademarks are amazing but some companies policies are not.
I am planning to study a few courses from the WIPO, I am days away from finishing my master on Law of IT, but now I want to learn more about intellectual property. We were too focused on data protection