The desire to strengthen old laws is interesting. Why is it that they seem better than the laws we can create today, given our advancements in education and ethics? Pining for the past due to the absence of 'something better'. Why does that 'something better' not exist?
Rights are granted with the intent to increase power/wealth for those who grant rights. Based on results, those in power no longer believe that granting rights to commoners is in their best interest.
Average citizens have less impact on that now. The constitution and amendments come from a time when they applied to fewer, more powerful people. The erosion of those rights is to be expected unless you're living in an altruistic utopia.
Highly recommend you watch CGP Grey's Rules for Rulers for another perspective.
Unfortunately, Liberals have weakened the 2nd Amendment to mean "only if you have a good reason", and weakened the 1st Amendment to mean "as long as you don't offend someone", while Conservatives have weakened the 4th amendment to mean "we suspected it without good cause and it turns out we were right which made the whole search ok."
I think if we stop weakening the ammendments we'll stop seeing violations of our basic civil liberties. But when California passes laws that regulate firearms you can wrap a thumb around (yes, this is a real thing), and Arizona passes a law that allows police to stop you if they suspect you're an illegal immigrant, we'll be in a slow spiral with decreasing rights.