Anti-abortion supporters said they are speaking up to protect the unborn.
Congressman Dan Lipinski said that although he's a Democrat, he's always been against abortion.
"We need to protect the most vulnerable and there's no one more vulnerable than a child in the womb," Lipinski said.
Abortion-rights advocates voiced their opposition to the rally, saying women should have the right to choose.
"I'm here today because reproductive rights are a part of everyone's collective liberation," said Dana Kleifield.