Messages emphasizing scientific agreement are increasingly used to communicate politically polarizing issues. Proponents argue that these messages neutralize the effect of people’s political worldviews due to the neutral scientific character of the message. Yet this argument has not undergone extensive testing. Addressing this, we measured participants’ thoughts on scientists featured in messages emphasizing scientific agreement on politically dissonant issues. Our results show that readers often produce less favorable thoughts and moral judgments when scientists agree on a politically dissonant issue. As a result, messages emphasizing scientific agreement on politicized issues might not always neutralize the effect of people’s political worldviews.