American Coptics braved the rain in the nation's capital Wednesday, demanding an investigation into recent violence that left 27 Christians in Egypt dead.
Demonstrators argued that by giving money to Egypt, America is at least partially responsible for the deaths of Christians in Cairo.
The Oct. 9, 2011 violence marked a bloody end to a peaceful demonstration. In addition to those killed, 300 others were injured.
Witnesses said the deaths came after snipers opened fire on protestors and Egyptian army tanks crushed the Christians.
American Coptics want those responsible for the killings to face international justice.
"What our brothers and sisters in Egypt were asking for was just some basic rights," protestor Martina Beshai said.
"We see no reason for all the violence the Egyptian military came against us," she said. "And we're here to have our voices heard and to say this injustice has to stop."
Magdy Khalil is an Egyptian American and leader of Coptic Solidarity. He and others who demonstrated in front of the White House Wednesday said they want Americans to realize that U.S. dollars were used to kill Egyptian Christians.
"As a taxpayer in the United States, our money went to the Egyptian army to kill peaceful protestors," Khalil charged.
"Did you know that the tanks that crushed our people were American tanks?" he asked.
Egypt receives about $2 billion each year from the U.S. government. About half of that goes to the Egyptian military.
Next month, Egypt will hold its first election since former President Hosni Mubarak was forced from power last January.
Those demonstrating in Washington say changes in attitudes and the treatment of Egypt's Coptic minority must begin now.