A more thorough explanation:

Definition: Contra pietatem is a Latin term that means "contrary to natural duty."

Examples:

• A son who neglects his elderly parents and refuses to provide them with care is acting contra pietatem.
• A doctor who intentionally harms their patient instead of providing them with proper medical care is acting contra pietatem.

These examples illustrate how someone can act against their natural duty or obligation. In the first example, a son has a natural duty to care for their parents as they age and require assistance. Neglecting this duty is acting against what is expected of them. In the second example, a doctor has a duty to provide proper medical care to their patients. Intentionally harming them goes against this duty and is therefore considered contra pietatem.