Youth street gangs in 1970's Ottawa?

As a kid in 1970's Ottawa, I lived in a couple of areas that were not the ritziest places. When I was about ten, we lived in an apartment in Hintonburg. All the local kids used to talk about a neighborhood gang called "The Devil's Gang" but I never actually saw or met any member of that gang.

When I was 11, my parents got back together and we rented a townhouse in Sheffield Glen. Again, in that neighborhood, there was an infamous local gang that I never actually saw any trace of. This gang was supposedly based in a rent-to-income housing development at the corner of Russell & Walkley, right across Russell Road from the more upscale Sheffield Glen. This gang was named "The Russell Rollers".

Does anyone recall either of these gangs? Were they real or only urban legends? Kind of odd that two widely separated neighborhoods both had the same type of quasi-mythical youth gang.