Tea Katai twice posted on Instagram, the first post calling to kill protesters, and the second appearing for a suspected shoe-carrying theft with a caption, “Black Nikes Matter”.
Both publications have since been deleted.
Organized galaxy stands against racism, she said.
“Earlier in the day, LA Galaxy was briefed on a series of racist and violent social media posts … LA Galaxy strongly condemned the social publications and requested their removal immediately,” the team said.
Alexander Katai said on Instagram that his wife’s posts were unacceptable.
“These opinions are not opinions that I share and do not tolerate in my family,” he wrote. “This is a mistake from my family and I bear full responsibility. I will ensure that my family and I take the necessary measures to learn, understand, listen and support the black community.”
On Friday, the galaxy released another statement announcing the departure of Katai, saying that the two sides “mutually agreed on separate paths.”
Katai, 29, was in his first season with the galaxy after spending two seasons with the Chicago Fire. Katai, from Serbia, has played six games with Serbia, including four games at the 2018 World Cup.
Before coming to MLS, he played club football in Greece, Serbia and Spain.