It is important to stand up for what is right, and for your rights. It is not, however, necessary to continually confuse issues. It only tends to weaken any one particular argument and ultimately lose you your entire battle.
It is vitally important to set aside passion in a debate and stick to the facts...let McDonalds' staff play the passion card...it never works in a court room or in front of a judge. If your argument is entirely passion with little substance...then give up early...don't waste your time.
If you are going to fight a battle for worker's rights, then stick to that issue ONLY...it doesn't matter if the rain forrest is dwindling; not to worker's rights it doesn't.
If you are going to make an issue of the dwindling rain forrest, then don't pull worker's rights into the argument...KEEP THE ISSUES SEPARATE! It is the only way you will win a debate either in or out of court. People will listen to you if you are focused, articulate, and cogent...they will turn you off in a heartbeat if you are broiling over with antipithy, babbling from one hot button to the next without ever presenting clear issues and facts to support your central argument.
Keep up the fight...but remember...on ANY battle field...the one that is not focused (blinks first) is the dead one. EYES OPEN at all times.