If it's Thursday, it must be Columbus

Yep. From Mark McCullers:

Nordecke Supporters:

I have received several emails regarding the increased security presence in the Nordecke for the Saprissa match. We have respectfully requested that the chants including profanity, most importantly GTFO, cease. Unfortunately that chant has continued, specifically during the Cruz Azul match and then several times during the LA match.