How Seattle's $15 minimum wage killed entry-level jobs.

Seattle was the first big city to pass a $15 minimum wage.

People there were excited.

"I think it's pretty awesome since I benefit from it," one told us. Another added: "I wish it was all over the place, not just Seattle."

Now, five years after the law passed, the evidence is in: While some workers did earn more, entry-levels jobs decreased.

The politicians never mentioned that when they passed the bill, says Erin Shannon of the Washington Policy Center: "It's really presented by minimum wage advocates as…a win-win for employers…a win-win for workers."

She pointed us to a factory that moved hundreds of jobs out of state, and to a store that stopped hiring beginners because of the $15 minimum wage.

"The politicians, in Seattle especially, have no sense whatsoever about what it means to small businesses like us," the owner of Retrofit Home tells us.

A minimum wage hurts young people who need a first job, say three young people who won a contest organized by Stossel in The Classroom, which provides free videos and lesson plans about free markets to teachers.

Dillon Hodes won the high-school-level video contest. He says a friend who worked at Kroger saw her hours cut as the store implemented a $12 minimum.

"Raising the minimum wage causes increased unemployment," explains Rigel Noble-Koza, the college-level contest winner.