LOL! Historically speaking, 'Diamond 13' or 'Diamond M' is a companion patch to the 'Diamond 1%' patch - They are the same size and offset each other generally. If one is wearing one of them, one likely will be wearing the other. Outlaw MCs regularly adopt them as part of their cut. which should be no surprise...
The 'Diamond 1%' patch declares the wearer an 'outlaw' (began as not complying with the AMA rules of membership) - Later to signify rebellion generally...
'The Diamond 13' and later 'Diamond M' patches signify thirteen members of a court proceeding - It declares the wearer to be 'his own judge and jury'.
'Outlaw' and 'My own law'.
In the abstract, it is no different than a redneck boy wearing a Rebel flag.
Now, it's been a while, but that is what they meant back in the day, and I doubt it has changed definition that much today. That it signifys what you suggest is simply laughable - Denigrating it's symbolism to such a lowly purpose would be a shame.
Surtr disagrees...ymmv