Who is blocking 15 tattoos that took over the world in 2014?

The phrase "15 tattoos that took over the world in 2014" likely refers to a viral trend or popular tattoo designs from that year. However, if you're asking about a specific group or individual blocking these tattoos, there isn't a widely recognized entity known for doing so. If you have a specific context or reference in mind, please provide more details for a clearer answer.