Police drove an armored SWAT vehicle known as a BearCat up to Hamilton Hall which had been occupied since Monday night.

A line of cops stormed up a ladder into a second-story window to get access to the building.

Former NYPD officer Bill Stanton told me that police went in with military precision.

What you saw was a use of that vehicle to its optimum level.

Taking it, going around, not having to go through the front and smash the doors down as you would envision in a movie, but going in with stealth and efficiency.

Forward! Two columns! Let's go.

Cops fought a pitched battle in the narrow doorway and were pelted with projectiles.

Video released by NYPD shows police officers racing up the staircase.

Police!

And forcing open the door of a professor's office.

And look, this was the aftermath of the occupation by pro-Palestine forces.

Piles of furniture that had been used to build barricades and shattered windows where offices had been ransacked.

Outside, police methodically cleared the encampment tent by tent.

This was the eerie scene from above. Tents lit by police flashlights.

And this was the scene just 30 blocks away at City College as police broke up protests there.

They took down a Palestinian flag and replaced it with the Stars and Stripes.

There were 300 arrests at both colleges with some charged with burglary and vandalism, others with trespassing.

They were taken to police headquarters in a fleet of buses.

Preparations for the police operation began yesterday when cops launched this spy drone to scope out the building.

The dramatic scenes unfolded live on TV last night.

Donald Trump was watching from Trump Tower and called in to Sean Hannity.

Well, it's just such a sad thing to see, Sean.

When you look at this, it's not even believable.

If you go back a year or go back three or four or five years ago, this would not even be possible to think about.

Today, NYPD Commissioner Edward Caban defiantly held up a chain that the pro-Palestinians used to barricade the doors.

Trying to lock us out, but the NYPD and the people of the city of New York will never be locked out and we will always work together to keep our city safe.

And Mayor Eric Adams blamed outside activists for escalating the protests.

Outside agitators were on their grounds, training and really co-opt in this movement.

Police say this woman, Nali Al-Arian, whose husband was deported in 2015 for terrorist-related activities and Lisa Fithian, known as Professor Occupy, are among the outside agitators.

Two students who bravely tried to block protesters from occupying the building are speaking out.

I just wanted to register my protest against their protest.

That's what I was telling them.

Someone needed to say something.

Ideally, someone at our university could sort of say that, well, they didn't agree with what was happening.

This is the scene at Columbia today.

The occupiers may be gone, but the protests continue.

This time, it's professors and others who say they are outraged that the NYPD was brought in to break up the protests.

The tents are now gone, leaving only patches on the lawn where they once stood.