Got links? The Great Depression had mostly one cause which was loose credit, then an inevitable bubble, then an inevitable bursting (Bernanke is actually wrong, it's the preceding loose credit that created it, not the bit of subsequent tightening). The protectionism was not a cause but helped make it worse at the wrong point in time. If you want government protectionism now, you are making the same mistake.
You “free traders” have completely demolished the US domestic economy, as current economic news and events demonstrate.
Now you’re saying trying to protect ourselves from your radical internationalist economics is ‘protetionism’ and a ‘mistake’? LOL. The mistake was to allow you people to run unchecked for so long in the world, and letting you loot US taxpayer dollars to pay for your destructive schemes.
History has shown over and over that “free trade” demolishes countries, it starts civil wars and is responsible for starvation and ethnic cleansing.
I say protect the US! It is the last and only hope for humanity.