The case is that:
You are at the Canucks game. Your face comes up on the big screen saying that you are the lucky winner and you won two free tickets to a future game. You go collect your tickets and realize that you already have tickets to that same game. You sell them infont of the stadium before the game and begin scalping which is selling the tickets illegally. You plan on using the money to donate to childrens hopsital . If you are going to be donating the money in the end and do an act of chesed does this make the situation ehtical.
While there is some ethical value to what you are doing, breaking the law is in if of itself unethical and likely a violation of Halacha. In addition there is potential for Chilul Hashem if you are caught and identified as a Jew breaking the law.