That's why they , hold various campaigns, negotiate with relevant parties in domestic disputes and so on.
LOL I missed that in my first reply. You've really been sold a bill of goods, and bought into some specious marketing claims
Very little of police resources are used for this type of activity, but when it is, it is more properly termed "looking for someone to arrest for something."
...In an attempt to "improve their image". You've obviously bought into this marketing, but many people have not.
negotiate with relevant parties in domestic disputes
There are now federal rules (Violence Against Women Act) that generally requires an arrest to be made when a domestic call is made. The "negotiation" you're so fond of the police conducting is basically an exercise of "deciding who to arrest" and "collecting evidence on the perp". The only "prevention" aspect of this is that someone gets locked up, and prevented from beating up their domestic partner again for a day or two.