Woman. Life. Freedom.

Those three words have filled the streets of Iran since the women-led protests agains the regime erupted last September.

The rallying cry began after a young woman, Mahsa Amini, died after being beaten by cops for not wearing her headscarf properly.

Since then, more than 14,000 people have been arrested, at least 326 killed, and one executed. It's the biggest uprising Iran has seen since the so-called "Green Movement" in 2009, Ian Bremmer explains on GZERO World.