A couple dancing in the streets of Mashhad, Iran. Screen capture from the video below. 
A video shows a young couple dancing, their bodies nearly touching at times. The scene would seem far from scandalous in much of the world, but it was filmed in the middle of the street in Mashhad, one of the most conservative cities in Iran. Dancing is strictly forbidden for women in Iran, but overjoyed Iranians broke many rules after moderate Hassan Rohani won the presidential election.
This video was widely shared by Iranians on social networks, as it symbolises what many see in Rohani’s landslide win: a victory of reformist values over conservative ones.
A couple dancing in public in Mashhad during post-election celebrations.
This pair was particularly notable because they dared to dance in Mashhad, a city considered holy by Shiite Muslims. But many others also let loose this weekend during post-election celebrations. Videos from all around the country show men and women singing in the streets. In Iran, men and women singing together is usually not allowed by the authorities.
Men and women singing together during celebrations in Tehran Saturday night. At the end of the video, they can be heard chanting slogans in favour of freeing opposition leaders Mir Hossein Mousavi and Mehdi Karoubi, both under house arrest since the protests that followed the 2009 elections. 

“I even saw women take off their headscarves!”

Sephideh (not her real name) is a student in Mashhad.
On election day, young people in Mashhad were already circulating text messages saying that if Rohani won, we should gather in one of the city’s main streets, Sajjad Street, to celebrate. The scene there on Saturday night was unlike anything I’ve ever seen. People were dancing and singing, even old people. People were stopping cars and telling their occupants they had to come out and dance with them, before letting them go on their way. You could see that a lot of women didn’t dare dance too much, because they were afraid of being caught on video and getting in trouble later, but some got around this problem by dancing in the side streets.
Even more surprising, I saw several women take off their headscarves. In videos of celebrations in other cities, I didn’t see any women dare do that! I even saw one girl take off her manto [a type of long jacket worn by most Iranian women]; her male friends hoisted her up on their shoulders in celebration.
"The suffocating atmosphere in Mashhad made people here celebrate even harder than in other cities"
Obviously, people were surprised to see all this, but it wasn’t a complete shock either. Mashhad may have the appearance of a religious city, and people rarely dare stage protests here, but the people who live in Mashhad aren’t necessarily that conservative. A lot of people abide by religious codes because they fear the government – or their parents! But in fact I think it is the suffocating atmosphere in this city that made people here celebrate even harder than in other cities.
I think it is telling that the police did not break up the celebrations, and that the very religious people did not stage any sort of counter-protest. In fact, some looked on in amusement. For example, I saw women in chadors clapping along with young men dancing! Things here are changing, just like in the rest of Iran.
People dancing in public on Saturday - a rare sight in Iran. Video filmed in Dezful.
More singing and dancing in the streets of Tehran.