Try another option.

There is no need to involve all staff in the matter unless the problem is more widespread.

Try another option.

There may be some truth to this point, but stressful situations do not give staff permission to express their opinion in discriminatory ways.

Good answer.

Although common sense should play a big role, staff need to be made aware of their rights and obligations towards each other.

This is best done through creating policy, setting the required standards of behaviour and communicating this to staff.