I'd give them examples of laws that we've since discarded: no interracial marriage, no helping slaves, prohibition, no sodomy, etc. This shows how laws don't equal good.
Then I'd explain how police harass marginalized groups like people of color or trans people all the time, simply because our society teaches us that black = criminal. So conflict with the police happens regardless of laws obeyed.
Maybe I'd throw in how perfectly legal things are absolutely abhorrent, such as war, environmental destruction, etc.
Perhaps I'd say give the analogy that 'laws are equal: it is just as illegal for a poor person to steal food as it a rich person' to illustrate how many are forced to break the law to get by.
I might even go so far as to say that we don't need laws to decide what's good and bad, and that at best laws are overly stiff and don't change per context, and at worst they exist to protect a terrible society.