What is one example of a valid reason for an arrest without a warrant regarding a domestic violence situation?

In a domestic violence situation, one valid reason for an arrest without a warrant is a violation of a valid domestic violence order. This is because such orders are legal documents issued by a court that provide specific protections to individuals who have been subjected to domestic violence. When law enforcement is aware of a violation of this order, they have the authority to act immediately to enforce the law and protect the victim's safety.

The presence of a valid domestic violence order indicates that there are serious concerns about the potential for further harm, and allowing the situation to go unchecked could lead to escalating violence or intimidation. Therefore, an arrest can be made without a warrant to ensure the safety of the individuals involved and to uphold the protective order enforced by the court.

In contrast, other options do not meet the criteria for immediate arrest without a warrant. A misunderstanding between parties, simply arguing loudly, or the mere presence of a weapon, without further context or evidence of violence or threats, do not inherently justify arrest under the same urgent circumstances as a violation of an active domestic violence order.