Because it no longer triggers a reaction, it is no longer used as an instrument to shock. In sum, if group sentiment becomes more tolerant and less easily hurt, the actions that try to hurt it will diminish.
Bank frauds are perpetrated by insiders or outsiders to the bank or by way of a collusion between them. Their acts take the form of embezzlement, misappropriation of funds, aiding and abetting, making false entries in books or statements making false statements in credit applications, money laundering and other fraudulent practices.