A video taken by a fan has been uploaded onto YouTube, featuring the manager cursing at their fans. From the beginning, he tells them to get out of the way roughly. The fans are neither crowding Red Velvet or being overly pushy - in fact, they're all girls telling Red Velvet quietly, "Unni, get home safely!" or calling the girls' names. The fans walk alongside Red Velvet, but do not block their way or try to make physical contact. The manager's voice rises, calling them 'b*tches' and 'f*ckers', and tells them not to talk to the members at all.

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On May 8th, after 'Music Bank', a fan that was present wrote that the manager hit a fan's head, their arms, and also pulled on the hoods of their sweaters. A fan tried to give Irene a fan letter, but he snatched it away, cursed at her and threw it back her face. Irene is reported to have looked worried and sorry, putting her hands on the window in apology before the van pulled away. 

The video that showed the manager hitting fans has been pulled off YouTube, but the video of him cursing at fans is still up. Watch it above.

[Thanks to everyone who sent this in.]