Fellas,
You have to understand something. There are evil people, destructive people, anti-social people. And, they're not all like Jared Loughner or a street criminal who will knife you for the $6 in your wallet. Some of them, plenty of them, wear suits and ties. Some of them, plenty of them, are in politics.
The appropriateness of self-defense is too easy to understand. Anybody who is against it or wants to impose serious restrictions is automatically suspect. An anti-self-defense view so easily aligns with supporting criminals, rapists--bloodshed and injury to innocents--that it takes no effort at all to understand.
Don't bang your head. Recognize the signs. Suspect the individual.
Portantino is suspect. Notice his comment about 2A giving you the right to protect your property? Its an assertion intended to convey a limitation, not an expansion, on a right. Notice his lag when the interviewer asked if your person was included in property? Notice how Portantino smoothly shifted to say OC is Old West and doesn't fit the picture, while conveniently omitting that may-issue pretty much guarantees no defense of your property (body) in public?
Portantino is suspect. He should be investigated. His attitude is too supportive of crime, too anti-social. I think there is a fair chance that some digging into his personal life by a private investigator might reveal other anti-social tendencies, perhaps even criminal conduct. A number of Bloomberg's Mayors Against Illegal Guns have already fallen to crime and corruption exposure. No reason at all to think anti-social tendencies in politicians are limited to mayors.