However everyone has the right to freedom of expression and opinion, although freedom of speech is limited for the promotion of peace because it causes harm and disunity. Hate speech can cause physical harm to its victims when violence is involved and can also cause disunity.
I'm curious what's your definition of freedom.
If free speech is limited promotion of certain things, then it's no longer free speech. What kind of harm does it cause? Why is "disunity" bad? Why would you want to unite with someone you utterly disagree with?
And no, speech cannot cause physical harm, unless you're talking really loud directly to one's ear, hurting their eardrums.
In a society where everyone is free to speak is called freedom of speech, definetly everyone is free to speak But in a situation where the speech stands as a threat or abusive is called hate speech and in a situation where hate speech is involved it can lead to violence and disunity that's why freedom of speech is limited.