Be unapologetic
Being unapologetic means being unafraid to speak your mind. It means not being distracted by what other people think about you, your words or your actions. It means exuding confidence regardless of the biases against you.
It also means being clear about what you need even if it is not afforded to you. And if your requests are ignored, being unapologetic means asking again, again and again some more until you are heard.
Regardless of the bullying, intimidation and silent treatment that you are likely to face, just refuse to capitulate.
The underlying goal of being unapologetic is to never give up. For me, that means doing whatever I can to bring my son home. For you, it may mean freeing yourselves of whomever or whatever is denying you of your rights to live free from interference.
Remember there is firm ground to stand on with facts and purpose. Be unapologetic and go for it.