Free vs. Open

You probably know about the ongoing debate of Free Software vs. Open Source. It clearly isn't a black-and-white debate, and some may even say they don't care what the difference is. But let me show you with a black-and-white example what the difference is, and why it matters:

Let's assume you are against slavery for obvious reasons, and there is a movement that clearly states it is "PRO black people".

Then there is a movement that states to be "PRO human rights" - not only including black people, but everybody. While both might fight for a same cause some just support certain behavior in certain cases while others care about the essential underlying reason.

In everyday life there might not be a big difference, but in the end of the day I would like to see Free Software to succeed. It really is something worth caring about.