Hundreds of Chicago students joined their teachers on the picket lines Monday as the Chicago Teachers Union strike canceled classes for the eighth day.

The protest involved a so-called “youth-led” march from Chicago Freedom School downtown to City Hall, where students hoisted explicit signs and eventually stormed the building to raise a ruckus inside.

Dozens gathered at the Chicago Freedom School, across from Jones College Prep, dressed in red and armed with vulgar signs, then marched down State and Madison streets in route to City Hall. Others joined along the way and about 150 teachers met up with the students outside the City Hall building along LaSalle Street, where they initially sat silently outside holding signs, including many in Spanish.

Some were clever: “It’s time to use our outside voices,” one sign read.

While others were not so nice: “F**K YALL COP ACADEMY.”

Others included: “4GOT WAT SKOOL FEELZ LYKE,” “Chicago kids deserve better,” and “LORI needs to LIGHTen up so we can have an education.”

Many students also carried pre-made black and white signs with messages about liberal union-backed policies that take aim at corporations.

“Mayor Lightfoot: Fund neighborhoods, not developers,” one sign read.

“Tax corporate profits, bring back the head tax.”

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Students quietly doodled with chalk on the sidewalk outside City Hall for a while then started chanting: “Lori Lightfoot, get on the right foot,” and “We’re students, united! We’ll never be divided!”

After that, students and CTU teachers filed inside the cavernous marble-lined building to scream the same slogans while they jumped up and down. There was drums and rattlers and whistles, and lots of people recording the scene with their cell phones.

“We planned this to show solidarity with the teachers and CTU because we want our voices to be heard and we thought it was important to get a youth perspective,” Essence Gatheright, a sophomore at Lindblom Math and Science Academy, told 14 East Magazine. “We want to show it matters to us just as much as it does to the teachers.”

David Range, Gatheright’s classmate, contends the city is ignoring teachers, who are asking for a 15 percent raise over three years, class size caps, and increased hiring of union members, from support workers to counselors to nurses and librarians.

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“I feel like they are fighting hard, but the city is not listening to the teachers,” Range said. “So we felt if the students were to speak up for the students, they’d be more willing to look to the students because we are the ones being affected the most.”

“A lot of people are just showing it as if the teachers are the ones making these demands, as if they’re just asking for money, as if it’s just greed and a lot of it is affecting us and is work to change us and our learning environment,” Gatheright said.

About 300,000 students missed another day of classes on Tuesday as Chicago Public Schools officials canceled classes for the ninth straight school day, despite a 16 hour marathon negotiation session that ended around 2 a.m. Tuesday morning, the Chicago Sun-Times reports.

ABC News reports the city reached a tentative agreement with the Service Employees International Union representing support workers on Monday. CPS Chief Education Officer LaTanya McDade told the news site the district and CTU remain at odds over paid preparation time, but have made progress on union demands for smaller class sizes and increased staffing.

McDade said what’s now the longest teachers strike in the city’s history could end with a little help from the CTU, which has held firm to leverage as much as possible from the city’s recently elected socialist mayor, Lori Lightfoot.

“We have a proposal on the table, nearly a half a billion dollars of investments that addresses all the key issues,” McDade told ABC 7.

“We also need the union to make compromises,” McDade said. “We are a district that is still borrowing $1 billion to keep the lights on.”