What is the meaning of 'call out' in the following sentence?
[W]e must call out bad behavior, including that of the corrupt regime in Tehran.
from an article 'It's Official: North Korea is behind Wannacry' in WSJ. Unfortunately, the dictionary I use, The New Oxford American Dictionary, does not give the usage of 'call (something) out' as in the above way though it has a section for 'call (someone) out'. To me, 'call out' seems an idiom.