Arm,I'm not a lawyer either,(and given my disdain for that profession in general,I consider that a plus).
The way I read the case, the reason that the Emmons verdict went the way it did was because the Unions committed their offenses against an employer with whom they already had a collective bargaining agreement.
In the case you cited,I believe that it is a different situation because Local 17 used the violence,threats,and extortion against
innocent third parties with whom they had no collective bargaining agreement.
I know I'm simplifying it,but I believe that to be the essence of the case.