Grandpa Hansen Cache

I found Grandpa Hansen Cache in someone's front yard in Spanish Fork, I really like caches in people's yards, they seem safe from being stolen, at least safer, a lot of people dislike them because they are worried about getting in trouble if they go in the wrong yard or something, but I have always had the opinion that people are generally good and nice, like when I get asked by cops what I'm doing when I'm caching, I just tell them what I'm doing and its all fine... so why would I get scared if a cop pulls up? just me ranting...