Europe

I've been advocating protectionism in EU, even before Trump did it first.

The EU is way behind when it comes to very important strategic markets in relation to digital services... I feel import taxes in those sectors would make the EU stronger. EU might be good with cars and vehicles, but imho that's a legacy market that's not really fitting for the EU anyway, we are a dense enough area to be able to work pretty well without the need of cars (pushing for public transport + bicycles is another thing I've been advocating for ages).

The problem is that the existing exporters in the EU didn't want to get shot in the foot.. so I was very happy when I heard Trump would apply these tariffs, because it could finally be the push for the shift we needed.

Option #4: nuke BS intellectual property laws that enable rent seeking US firms.

Cory Doctorow has a policy proposal for Canada or any other countries that want to respond to US tariffs. The tldr; is make it legal to jailbreak your devices, so companies can sell aftermarket kits to do things like install a Canadian (or EU) app store on your iphone and cut out Apple's US 30% cut on all app purchases. Make it so any mechanic anywhere can jailbreak your Tesla or tractor or whatever to enable all your car's paid subscription features permanently and for free, etc.

Strike directly at the big American tech companies that prop up the stock market.

Only language they understand.