Rav Wolbe in Alei Shur, p 396, speaking about the refinement needed for accepting the Torah quotes the gemoro in [Kiddushim 40b](https://www.sefaria.org/Kiddushin.40b?lang=bi) that someone who eats in the marketplace is compared to a dog and some say is invalid as a witness. 

Do the sources give other examples (especially contemporary ones) of behaviour which manifest a disregard for man being “in the image of G-d”.