He who indulges in liberty of speech, will hear things in return which he will not like.

Speaking freely is a two-way arrangement whether or not you intended it. The person who says exactly what they think has, by doing so, given everyone else permission to do the same, and some of what comes back will be true and unwelcome. That is the actual price of candour, and it is often paid by someone who only budgeted for the pleasant half.

Decide honestly which you want. If you want the freedom, take the return traffic without treating it as an attack, and thank people for the parts that stung. If you would rather not receive it, that is allowed, and it means being more careful about what you hand out.