The poster uses the universally known letter 'X' from the word extremism, to symbolize it has no place in this world.
Also the 'X' is treated almost like a fossil, remains or traces of extremism, from the remote past. Representing it has no place in the present or future world.
This poster belong to
Make Extremism History

poster for tomorrow, the international poster competition, is proud
to announce the launch of its 2016 edition: This year we're going to do
things a little differently. It's about evolution, not revolution.