"Dogs" is a harsh word here, but I think your common westerner is not aware how differently muslims treat other muslims and nonmuslims, if following their own faith.
As far as I understand, there is an actual hierarchy where nonbelievers are at the bottom, with rules of how they can be treated. For example it seems accepted to make agreements...
as believers with nonbelievers without the believer having any intention of holding up his part of the bargain. This from a supposed "holy" scripture.
