Barack Obama is an intellectual.

Trump is what Obama critics think Obama is: Someone who's focused on symbolism rather than substance.

One of the things we've learned during the Obama era is how important norms are, because we've seen how the Republican Party behaved against Obama. So much of what they did was to smash pre-existing norms, which were nothing more than assumptions of how people would behave, which didn't have any real basis in rules or limits.

In some ways, Trump is just going to continue the trend: by continuing the norm-smashing behaviour that Republicans used in opposition.

American democracy faces a massive challenge. I don't think it is a certainty that we're headed toward Putin's Russia, as some commentariat does. But people need to mobilize and build up small-d democratic institutions to prepare against that eventuality.

Because many people remembered a time when the Republican Party was not so extreme, and hadn't full grasped how much it had changed, people blamed Obama for his failure to get Republicans to agree with him. That blame coloured so much of how the public saw Obama during his presidency. The public thought he was dealing with a brand of Republican leader that just didn't exist any more.

I worry about the entire structure of American democracy under Trump.