Complex sentence: Depending on the context, the expression can be perceived as a form of advice or constructive criticism; but it can also be interpreted as a threat (or an invitation to act on a threat) or an accusation.
Split into simpler sentences: Depending on the context, the expression can be perceived as a form of advice or constructive criticism. It can also be interpreted as a threat (or an invitation to act on a threat) or an accusation.