You can call the cops for almost anything. They'll decide if it's worth their time based on the specifics you provide. Screaming might indicate a problem with domestic abuse, verbal or physical assault. That doesn't make anything criminal, and even if it were, the cops wouldn't do anything about it. However, they could use it as evidence that a crime has been committed.
The police deal with emergencies every day. If you call them to report a crime that isn't an emergency, they will ask you what happened and why it's important for them to come to your location. They won't always be able to help. For example, if the crime wasn't serious enough to require an officer to arrive on the scene, then it won't get reported. The only way to know if something should be reported is by calling the police department directly. Sometimes people think that if they don't want to get involved, then nothing bad will happen. But that's not how the law works. If you don't take action, then you are agreeing that everything is okay. That may have been true earlier, but now someone may be injured or even dead because you didn't act.
Calling the police is rarely the best option. In fact, it's usually the last option. There are many situations where only a trained professional can help. For example, if you're having a mental health issue, then you should find another way to handle it. Cops aren't psychologists or psychiatrists.
Is it legal to contact the police if someone yells at you? Someone yelling at you is not breaking the law unless they are attacking or threatening to assault you. Yes, if you believe a physical assault is impending, you are in danger, and you are feeling unsafe. You can use force to protect yourself.
It is important to remember that people who drink alcohol may act irrationally during an argument or confrontation. If you are around people who are drinking alcohol, try not to escalate the situation by arguing with them. Instead, walk away from the argument or conflict and find another time to discuss your differences.
Here are some other things to think about if someone is yelling at you:
Are they being aggressive towards you? Is there any physical contact involved (for example, punching, kicking, hitting with objects)?
Is anyone else involved? Is there a group of people harassing you?
Can I take the person down a notch with my words? Maybe ask them to be quiet so I can listen to what you have to say?
Could I ask them to leave me alone?
No, yelling at someone is not prohibited in general. Disturbing the peace is a criminal act. Screaming at a shopkeeper, for example, may be considered disturbing the peace. If a person screams at someone while threatening them with injury or death, that person may be committing a felony. However, simply expressing your opinion loudly would not be considered unlawful.
Yelling is only problematic when it becomes physically threatening. If you can control yourself from moving away from someone then there is no problem since physical contact is required to violate the law. Otherwise, you should be able to yell at someone without risk of legal action.
In some countries, such as Germany, France, and India, shouting "Fire" in a public place will start a fire. This is known as a "fire alarm" and uses sound to trigger an alert in other people so they can take precautions (such as calling the fire department) before flames actually reach something flammable.
The noise itself does not cause any damage but it can be alarming for others. Shouting "fire" therefore has the potential to save lives by getting people out of dangerous situations.
People sometimes yell "Fire!" as a prank. This is usually done during fire drills in schools to scare the students and teachers. It is important to understand that this is not unlawful unless you intend to harm someone else.
No, yelling at someone is not prohibited in general. Disturbing the peace is a criminal act. Screaming at a shopkeeper, for example, may be considered disturbing the peace. If the shopkeeper has asked the customer to leave and the person continues to yell, this might be considered trespassing.
If you're wondering how yelling in someone's face would be categorized as a crime, it wouldn't be an assault since the crime of assault involves the inflicting of some kind of injury, no matter how minor (such as a bruise or reddened flesh). Yelling is not considered to be a dangerous weapon and thus cannot be used to justify an assault charge.
That being said, a person who yells abuse at another in public could be subject to arrest for disorderly conduct. This would depend on whether police believe they have enough evidence that a crime has been committed. If so, then arresting officers would need to take this into account when making their decision about whether to issue a criminal summons or make an arrest.
Disorderly conduct is generally defined as "any act which is reasonably likely to provoke anger, alarm or resentment in another person." So if someone were to use a loud speaker in an attempt to harass another person, this would be considered disorderly conduct.
Police officers are allowed to use force to make an arrest, including using their firearms if necessary. However, they would also be required to use reasonable care to avoid harming others during an arrest. For example, an officer may be able to restrain someone with handcuffs or a tie-down device without committing an assault since these methods do not cause serious bodily injury.