First of all, this didn't take place in Singapore. And from
their comments, Singaporeans don't seem to realize that this
particular incident is mild, by China standards. In China, it is
common (like, several such incidents every day? you know how big
China and its population is?) to have the wife and her own gang of
6-8 friends (usually women, but sometimes include men) not only
totally strip naked the mistress in public, but also thereafter
viciously beat her up without mercy for prolonged periods (with
dozens or hundreds of members of public around watching, no one
dares to intervene) until the crying/screaming/begging mistress is
all bloody and losing consciousness, sometimes shaving the
mistress' head bald, with 2-3 of the wife's gang filming the
incident on their handphones to upload her humiliation online
permanently on the internet (ostensibly so she won't dare to look
for the husband again). Common ethical decency sense dictates that
in such a scenario, the worst karmic perpetrators are : the wife,
followed by her participating gang members, followed by her husband
(especially if he was present but didn't even try to stop the
wife), the members of the public who just watch without intervening
in the public mob lynching, and lastly, moreso the victim than a
perpetrator, the mistress herself (who may have been lied to and
not even know the cheating husband is married, and/or it was the
husband who, sick of his ugly fat wife, actively pursued after the
mistress).
http://www.stomp.com.sg/singapore-seen/singapore/drama-at-starbucks-as-woman-slaps-strips-and-shames-husbands-alleged