guilty of transgression

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This strange, cruel, and almost unaccountable ingratitude in the captain, absolutely broke the poor doctor's heart; for ingratitude never so thoroughly pierces the human breast as when it proceeds from those in whose behalf we have been guilty of transgressions.
They suggest that -- given the volume of abuse allegations -- the low number of police officers found guilty of transgressions indicates that the authorities are not doing enough to tackle the problem.
Mubarak aimed to defend Egyptian businessmen from the constant media attacks though did admit that some were guilty of transgressions, calling on them not to flaunt their wealth.