At a glance, right and wrong seem so straightforward and black and white, but laws can be grey and confusing, so knowing what’s legal and illegal is challenging. This can also sometimes be very confusing because states have different local laws, so what’s legal in one state may be illegal in another. As a result, there are a number of bad behaviors that at a glance, may seem like they are breaking the law, but in fact they are legal. There is no shortage of bad choices that can lead to an arrest, but there is a shortage of bad choices that will not lead to an arrest.
Even though it is disrespectful, unnecessary, and unhelpful to your cause, swearing at a cop is legal. Some states might even have laws against it, but everyone is protected by our First Amendment right to the freedom of speech. The Constitution protects the rights of the people even if the people may act or speak in the wrong. If your swearing is accompanied by violence though, that behavior is illegal disorderly conduct. Also, although it may sound bad, defacing United States currency is not illegal. Nowadays, anywhere you go in the U.S., there’s a penny-squashing machine that you pay to deface currency.