On the streets of Iranian cities, it’s becoming more common to see a woman passing by without a mandatory headscarf, or hijab, as the second anniversary of the death of Mahsa Amini and the mass protests it sparked approaches.

There’s no government official or study acknowledging the phenomenon, which began as Iran entered its hot summer months and power cuts in its overburdened electrical system became common. But across social media, videos of people filming neighborhood streets or just talking about a normal day in their life, women and girls can be seen walking past with their long hair out over their shoulders, particularly after sunset.