Wow....that is very interesting. Really though if police have probable cause they can search.
Let's use this scenario....a family member or close friend is murdered. The police have a suspect and many people have implicated them in the happenings. They said they know for sure and he or she was bragging about the occurrence. The police know that the suspect is hiding in somebody's house. They go there to question him or her without a search warrant. Then they see him or her in the background with a gun in their pants. Would you find it objectionable for those police to bust into that house without a search warrant to arrest the person they know killed your loved one? Well see when the tables are turned we want another plate to pick from.