This Australian commercial for Toyota Corolla (found here) includes a homogenous, racialized out-group.  More after the video:

[youtube]http://www.youtube.com/watch?v=Ckb-wUHj9WU[/youtube]

The term “out-group homogeneity” refers to the way in which members of an in-group tend to overestimate the extent to which members of an out-group are all alike.  I suppose we don’t know what good kitty’s friends look like (do they all look exactly like him?), but we certainly have the presentation of an out-group that is both categorically different from good kitty and homogeneously so.

I would also like to suggest that that out-group is racialized.  They didn’t use just any kind of cat to represent bad kitties, but a dark-colored cat.   (If I know my cats, the bad “guys” in this video are Russian Blues.)