Answer:
The eastern orthodox considered the use of Icons as a violation of the ten commandments from the bible.
Step-by-step explanation:
The second commandment in the bible stated that Thou shalt not make unto thee any graven image. The eastern orthodox church interpret this as a ban for the usage of objects such as idols or image of deities during worship. The roman catholic on the other hand, perceive the use of icon as a symbolic that help them feel the presence of God during their ceremonies.
This disagreement became one of the reason why the Eastern Orthodox and the Roman Catholic decided to distance themselves with one another during the Great Schism.