The NAACP is warning travelers — in particular, African-Americans — that their safety could be compromised if they fly American Airlines, citing a series of “troublesome conduct” by employees, reports NBC News. The travel advisory issued Tuesday is the latest from the nation’s oldest and largest civil rights organization, which saw its Missouri chapter in June issue a similar advisory for that state after various accusations of discrimination. In the case of American Airlines, “the growing list of incidents suggesting racial bias reflects an unacceptable corporate culture and involves behavior that cannot be dismissed as normal or random,” said new NAACP President Derrick Johnson in a statement. Johnson is also calling for a meeting with American Airlines’ leadership. In a news release, the NAACP listed four examples of what it called “possible racial bias,” although it didn’t provide details about the passengers involved or when the alleged incidents occurred. According to the group, one incident involved a Black man who had to give up his purchased tickets from Washington to Raleigh-Durham International Airport because he “responded to disrespectful and discriminatory comments” made by two “unruly white passengers.” In another case, the group says, a Black woman and her infant child were taken off a flight from Atlanta to New York when she asked that her stroller be retrieved from the checked baggage before she got off the plane. An American Airlines spokeswoman didn’t comment directly about the allegations, but said in a statement that it would invite the NAACP to the airline’s headquarters in Fort Worth, Texas.