Companies behind the most popular U.S. credit cards said they are severing ties with extremist organizations that incite violence after they came under pressure to stop providing ways for white supremacists groups to raise funds.

Discover Financial Services said it's ending merchant agreements with “hate groups,” while Visa Inc. and Mastercard Inc. said they were cutting ties with a number of sites as part of broader reviews.

“In light of recent events, we are terminating merchant agreements with hate groups, given the violence incited by their extremist views,” Riverwoods, Illinois-based Discover said Wednesday in an emailed statement. “The intolerant and racist views of hate groups are inconsistent with our beliefs and practices. While we do not share their opinions, we recognize their right to voice them, no matter how reprehensible we find them.”