WATERLOO -- Last Monday, federal immigration officers raided the Agriprocessors meat-packing plant in Postville.

Most of the 389 people arrested are facing criminal charges. The rest are suspected illegal immigrants.

Sunday in Waterloo, hundreds gathered at the Queen of Peace Church to pray for the immigrants and their families. Songs, scripture and speeches about immigration rights united the crowd.

Many of the people who attended the service have friends or relatives directly affected by the raid. After the church service, everyone stepped outside to kick off another event.

Hundreds rallied together outside to make a statement by marching from the Queen of Peace church to the National Cattle Congress site. The journey took more than an hour to complete.

"Liberty and justice for all" are promises these people say some Americans have forgotten.

"We are here the same way their grandpas came and everybody else. This country belongs to everybody, not just to the American people,” Jose Galvez, an immigrant, said.

Life for many in the Latino community has stopped ever since immigration agents rounded up about 390 people in Postville last week.

"Most of the Latino people haven't gone to work because they're afraid to get caught and most of them are just staying at home hiding,” Francisco Quinto, a marcher, said.

Now, community and church leaders are marching together to create a movement to reform U.S. immigration laws.

"We are getting the strength from God to do what we have to do and change the system that has hurt mothers, fathers, little children and has hurt our country,” Sr. Mary McCauley from Postville’s St. Bridget’s Church said.

It's a two and a half mile walk from the church to the National Cattle Congress. The marchers believe every step could make a difference.

"I think it's a better place to raise my kids. I think everybody's equal to live in liberty and, thus, I come to protest,” Luis Gonzalez, an immigrant, said.

Some marchers said their arrested friends and family members never intended to commit crimes like fraud and identity theft.

"They told them that's the paper they need to work. That's all they need. They never knew they were going to hurt somebody,” Lupita Figueroa, an arrested immigrant’s sister, said.

When the protestors finally reached the National Cattle Congress, they gathered at the gates and shouted demands at stone-faced immigration officials.

The chanted, "What do we want? Justice. When do we want it? Now!”

It's a request the demonstrators hope everyone will remember as the battle for immigration reform rages on.

Hearings for some of the people arrested during last week's raid will continue this week at the National Cattle Congress site.

It could take anywhere from days to years to resolve all of the individual cases.