Even constitutions only offer very limited protection. There was a recent case in Germany where the government simply ignored the ruling of the supreme court (Federal Constitutional Court). And keep in mind that this is the government with leading influence on the EU. I don't know about everywhere else but at least in Europe rule of law isn't as strong as people assume.
The US constitution also offers limited protection - it's subject to interpretation by judges, and re-interpretation by a growing body of people who think that it "needs to be updated" and "is a living document" and "is not absolute". Your fight for your rights will never end, as evil people will always be elected to office. Just because your officials are not literally Hitler doesn't mean that they won't be trying to infringe upon your rights.
Since you (or realistically anyone) downvoted me rather than engaging, i feel like I should elaborate.
Our modern understanding of rights is not wholesale received from the time that the constitution was written. The concept itself has evolved over time into what you cherish now. 200 years ago, the constitutional protections one received were far more limited than they are now.
