According to avpixlat , the Swede was taken into custody for ‘disturbing the public order’. At the end of the video, the perp can be seen holding a speech, unmolested by police.
A man screamed and hissed at Muslims and at least one Muslim tried to kick / beat him. But instead of charging the Muslim with attempted assault, police stopped the hissing man and took charge of him for disturbing the public order.
During the police questioning Muslims were screaming in the background. At the end of the video the microphone is handed to a new speaker on Möllevångstorget [square]. It turns out that this is the same Muslim who earlier tried to kick / beat the hissing man.
H/T Michael Laudahn
Also H/T To LN