Police and protesters in violent clashes in Jerusalem

The video discusses the tense situation in Jerusalem during a Palestinian prayer session at the end of Ramadan, where stun grenades and tear gas were used. It highlights the use of water cannons with skunk liquid, a foul-smelling substance. The context of Jerusalem Day, marking the city's unification in 1967, is provided, explaining the expected clashes due to historical tensions.

What historical event does Jerusalem Day commemorate according to the text?

How does the text describe the atmosphere during the events of Jerusalem Day?