He is considered a saint in the Eastern Orthodox Church, and even called St. Justinian the Great. Granted, he may have and has done many great things, he was infamous for the massacre of at least 30,000 unarmed in the Hippodrome after many riots. And he was responsible for the expansion of the Empire with wars that resulted in the deaths of millions of people. 5 million were killed in his military campaigns in Africa. At least 15 million Goths died in in his conquests, But he did build the magnificent Hagia Sophia . Of course, he wasn’t all bad, as he obviously made great accomplishments to the Empire and to Western Civilization.