All you need to do is get mad at the people who caught you doing the crimes!?
Literally: white – noon – public hall – [kanji doubling mark]
Alternately: (Doing something bad) in broad daylight.
Notes: This relatively recent coinage comes to us from the title of a 1966 crime novel (and the film it was made into in 1968) by Yuuki Shouji (pen name).
As always, the doubled character may also be written out fully, if that’s your jam.