Yes, unwarranted harassment, defamation of character.
对 告你们无证搜查和诽谤。
2010 ESLPod
So, " defamation of character" is to harm someone's character, to say bad things – untrue things about them.
所以,“诽谤人格” 就是伤害某人的人格,说坏话——关于他们的不真实的事情。
2014 English Cafe
We have an expression, " defamation of character." Your " character" is, in this case, your reputation – who you are, who people think you are in terms of whether you're a good person or a bad person, for example.