Worrying is unhelpful and a wasted effort. The energy, effort and attention we pay to an issue that may or may not come to pass is truly wasted and is a sure way we rob ourselves of that precious peace of mind. It might not always be easy; but try to remember there is a solution to every problem you just have to find it.
Freedom of speech is a right to be enjoyed but it comes with the responsibility of taking accountability if your words cause harm. It is absolutely ok to disagree; what is not ok - is to be utterly disrespectful.
Peace looks different for everyone. Guarding it is not an act of selfishness but an act of self love.