R. Naftali Zvi Yehuda Berlin, HaEmek HaDavar on Leviticus 19:14

This [mitzvah not to curse the deaf or put a stumbling block before the blind] is also part of the concept of maintaining harmony and the dignity of human beings one to another…and it is written in the beraita… “This is the book of the generations of mankind” (Bereishit 5:1)-Ben Azai states: This a major principle of the Torah” and the Raavad explains that he is referring to the end of the verse “[mankind] who was made in the image of God”- whom are you degrading? [when you shame another human being], whom are you cursing? [when you curse another human being]? The image of the Holy One Blessed be He” And someone who does not think this way is labeled as if the divine image is not resting upon them!”