The breaking of engagements.

The violation of cultural conventions.

The violation of legal rights.

Partisanship.

The violation of moral rights.

They are subjective.

They do not have a corresponding right.

They are harder to understand than "perfect duties."

They depend on legal duties.

They differ from the Roman Empire to contemporary Britain.

Everyone profits from the lottery.

Victims and patients are equally innocent.

The lottery can be adjusted for age.

Only evil people will be killed.

Victims are chosen at random.

... the personal good and the general good.

... free choice and coercion.

... killing and letting die.

... organ transplants and blood transfusions.

... voluntary and involuntary actions.

...it is rational to do what is moral.

... natural causation can override rational causation.

...free will is an illusion.

...empathy is not a good reason for acting.

... are pure matter and hence freedom is just an illusion.

... often follow their cultural training rather than their rationality.

... have a dual nature:  They are part of the sensible world and of the intelligible world.

... are pure spirit and hence independent of natural laws.

... are in practice mostly governed by their inclinations.