This, Americans want to joke that the UK is a police state, but its far from it, sure there have been some cases of social media posts being investigated and people being imprisoned for that, but that was predominantly in the context of civil unrest at the time and many of those cases are being looked at again for being unduly harsh.
The US by contrast you might be able to say what you want online to a degree, but just look at some of these videos, cops get to arrest you just because they think you might be over the limit, in the UK they can detain you if they believe you're over the limit but they have to validate that with a road side breath test / drugs wipe and if it comes back clear then you can go, in the US they just use a subjective test the cop could choose to fail you for anyway and then arrest you. America definitely has its freedoms but American police officers are police state tier.