This morning, the Teachers Union, in the city of Chicago went out on strike. It leaves students scrambling for a place to go, at least parents with no options. Just as the Union says, it had no other option. And like any big city population in our country, nothing is simple. It's a complicated situation with hundreds of thousands of innocent victims. There was a big protest rally late today called by the Union there in Chicago, and we start off our coverage with our chief education correspondent Rehema Ellis in Chicago. Rehema, tell us what's going on there?

Brian, the crowd is starting to thin somewhat, but thousands of teachers have been walking in the streets of downtown Chicago. And police were so concerned about it, they cordoned off(布置警戒线戒严) the street, right in the middle of this big city's rush hour, causing a lot of concern for many people. But this is right near the headquarters of where the city school administration is conducting business. And the business at hand right now is how do they get all of these thousands of teachers who are on the streets back into the classrooms. It has been a thorny issue. They had hoped in negotiations leading up to this for weeks and months that this was something they would be able to avoid, to make certain that they would get the hundreds of thousands of students back in negotiations leading up to this for weeks and months that this was something that we'll be able to avoid to make certain that they would get the hundreds of thousands of students back into the classroom.