Je suis Charlie
Wikisimpsons - The Simpsons Wiki
"Je suis Charlie" (French for "I am Charlie") is a slogan adopted by supporters of free speech and freedom of expression after the massacre in which 12 people were killed at the offices of the satirical newspaper Charlie Hebdo in Paris, France on January 7, 2015.
At the end of the season 26 episode "Bart's New Friend" aired, an animation of Maggie holding up the slogan was shown.