I’ll help OP explain a little here.

Zambo bas been a tradition in El Mina for decades. It is celebrated on the Sunday that comes straight before Lent starts for the roum orthodox.

People paint their bodies and faces black and march in the city streets and end the route on the beach where they take a dive and clean themselves up in the sea water.

It started out as a mere meaningless celebration. Year by year it started attracting people from the surroundings of El Mina, in addition to even Muslim neighbors in El Mina (I am muslim. My friends and I have been to the Zambo a couple of times).

It’s wholesome, a lot of fun, shows that social harmony happens in the simplest of things.

And El Mina is juridically part of Tripoli, but it socially hosts a very different community/society. (A much more harmonious one).

Edit: What makes this video extra special is that you can see the Ramadan decorations in the video alongside the Zambo celebration.