I'm surprised the photo wasn't taken in a Tim Horton's............
Now, before anyone gets upset let me be clear that I have the utmost respect for the fine officers who keep us safe. Friends with a few in fact. Coached baseball with one. He loved his donuts and never hid the fact from anyone. Course, he was 6'2" and about 250lbs so he didn't hear the donut gag except from me and a few others.
First, I read your first line as a joke, no offence taken. However, I don't think our police are allowed to sit in a coffee shop, or any restaurant for that matter. Other than occasionally when they are specifically there for pr. There are two reason. 1) They do not want to be seen like the unprofessional slobs often portrayed on tv. 2) It's a fine line to being paid protection, or even being perceived as such.