The Emperor is a good guy, he saved humankind time and time again, he's the psychic merging of thousands of shamans of old earth who sacrificed themselves with the sole reason to guide mankind and defeat chaos, everything past this point of the lore is fanction created by literal failed writers under the instructions of evil jews who hate you goyims and (you) goy who bought and wasted time reading those books, yes (you) are 90 IQ cattle.
The Emperor protects.