This song is about people making opinions about others based merely on their aesthetic qualities. They say, "mohawks and dyes - nothing but lies" to illustrate that the way someone looks does not define who they are.
"pre-conceived notions and quiet whispers" further shows that people are devising their opinions of someone based on the stereotype(pre-conceived notions) that person seems to align with.
This song is about people making opinions about others based merely on their aesthetic qualities. They say, "mohawks and dyes - nothing but lies" to illustrate that the way someone looks does not define who they are. "pre-conceived notions and quiet whispers" further shows that people are devising their opinions of someone based on the stereotype(pre-conceived notions) that person seems to align with.