Comment by olh

Washington Post linked to a reddit thread with comments bashing the CEO. The CEO did not like the world seeing him bashed by his own community and decided to impersonate the users to make them seem attacking the moderators of /r/The_Donald.

Reddit's TOS:

   > You are solely responsible for the information associated with Your Account and anything that happens related to Your Account.

The CEO crossed the line because he thought he could get away from any liability for doing it.