Offering my opinion now since I can't read/watch those links yet.
Unions are antiquated and counter-productive. First off, unions force all workers of a sector to join. My dad said he was threatened into joining his union, and this is quite common. Basically, if you don't join a union, you end the unions power. When they strike, you, and people like you, will cross the picket lines and work. Legally speaking, you are doing nothing wrong, but to the unions, you are evil and killing them. Also, there are numerous examples where union leaders have firebombed management bosses just because they refused to meet their demands. Now, we have the unskilled labor union movement starting where people at Wal-Mart, McDonald's, etc want to form a union, but what this will do is give people without skills or a college education the ability to strike for more money.