FERGUSON, Missouri (CNN) -

Police chased young men down Ferguson's streets and made arrests, as bottles flew again shortly before midnight.

Protesters locked hand in front of the police line, while some urged the crowd to remain peaceful.

The police presence rose significantly, as did tensions.

Until then, the streets had been calm, as a much smaller crowd milled about, holding signs and chanting.

A few hundred people walked up and down a small area past journalists' cameras. And as hours passed, the crowd thinned down to a few dozen.

"Hands up! Don't shoot" was their mantra, as it has been every night. But many of the demonstrators added a second chant: "We protesters, we don't loot."

Jameila White from St. Louis County walked a mile to hand out free water to protesters.

"We pooled together as a community to bring this," she said, pointing to three Styrofoam coolers of bottles water on ice. "So, we can stay energized and keep walking because they're saying if we stand still we're going to get locked up."

White, who once lived in Ferguson, also poured out several bottles of water and filled them with milk, to help wash tear gas out of people's eyes.

Police cars with flashing lights stood by every block of so apart.

Officers in body armor congregated at a car wash alongside an armored vehicle.

Even the police seemed surprised. Said one state trooper. "Can we be peaceful? That's all I'm saying."

Things must change

Leaders in the Missouri town insisted earlier Tuesday that things must change. Ten days have passed since a white police officer's shooting of an unarmed black teenager triggered emotional, expansive protests that have increasingly devolved into violence.

The state highway patrol captain tasked with maintaining security characterized what's happened in those 10 days as an embarrassment -- to Ferguson, to Missouri, to the United States.

In a statement Tuesday, Ferguson leaders vowed to rebuild the city's business district, parts of which have been ravaged by looting and unrest. They promised to recruit more African-Americans to join the police in their largely African-American community, a relevant point since the Ferguson Police Department is overwhelmingly white. And they signaled their intention to raise money so that all officers and police cars would be outfitted with vest and dash cams.

Those cameras are significant because they could have helped clear up many questions surrounding Michael Brown's death: Was Brown executed by a police officer while holding his hands in the air, as some activists claim? Or was Brown shot after rushing at Officer Darren Wilson, who fired fearing for his own life, as detailed in an account on a radio show?

Sides remain dug in

Without any known video of that August 9 shooting, both sides remain dug in. The Brown family's supporters are as passionate as ever, some saying they lose more and more trust for law enforcement with every armored truck on the road and tear gas canister fired into the air.

Wilson, meanwhile, has gotten more and more support of his own in recent days.

Supporters held a rally in St. Louis this week, and as of Tuesday, nearly 900 people had donated more than $33,000 to a fund for Darren Wilson, according to a GoFundMe page set up to collect donations.

The situation on the streets of Ferguson itself has deteriorated in many ways.

From Monday into Tuesday, at least 74 people were arrested for failure to disperse. Two others were arrested on weapons charges and another person for interfering with an officer.

In addition to this, two people were shot -- not by police, authorities said. Four officers were injured.

Outside agitators