Definitely, laws should be tested, as that is the only way to see if they are either robust or non fit for purpose... although it is a thin line that has seperated the social activism from borderline terrorism (my example would be the Suffragettes vs Suffragists, that were trying to push the women's vote).
Agreed, I also wrote in a different comment, laws are well-intentioned (mostly) to fix a certain problem, but of course they don't account for unintended consequences and edge cases, and this is where it is our duty as citizens to test these situations. Of course, that brings in the question of the access to legal systems, which are often limited by both time and money....
I'm sadly in agreement that we can't just trust in the complete goodness and fairness of the population... not neccessarily because poeple are ill-intentioned, but just because we all protect more strongly things that are of value to us, and we all value different things... also, one person's freedom will eventually come into contact with anothers....