You mention his brothers are of a different camp and this probably accounts for the particularly vile nature of Alec's shrillness.....He's a blowhard and the siblings know it....I doubt he says any of this when his candy_ss isn't protected.....
I've wondered the same thing. I haven't heard anything about Daniel Baldwin, just Steven and William and they don't go out of their way to get in people's faces and chew on people who disagree with them like alec does. He's a good stereotype for the common liberal. He thinks he's superior to all who disagree with him because he's so sure he's right, doesn't use facts to try and prove it, and when confronted with something that proves he's wrong, or when something goes opposite of how he wanted, like the Alito confirmation, he flies off into an obcenity laced rage. Typical liberal.