There are no winners in Thursday's release of the 500-page Justice Department inspector general report on the FBI's actions during the 2016 election.

Inspector General Michael Horowitz said former FBI Director James Comey was "insubordinate," former Attorney General Loretta Lynch erred in judgment, and FBI officials beyond Peter Strzok and Lisa Page were unprofessional in sending anti-Trump messages.

Here are the major takeaways from the report's release:

Comey's long series of bad decisions

When it came to overseeing the Clinton email investigation, Comey blew it -- at least in the eyes of the inspector general. Yes, Comey faced no-win decisions that were sure to anger everyone around him. But over and over, according to the report, he made the wrong call.

The inspector general gave a bruising series of conclusions on Comey's conduct: He shouldn't have held his July 2016 news conference about the Clinton investigation. When he did it anyway, he should have informed then-Attorney General Loretta Lynch about his recommendation not to pursue charges. And he shouldn't have told Congress, just days before the 2016 election, that there were new Clinton emails to examine.

Perhaps this is why there are protocols in place and norms to be followed. The report suggests that if Comey stuck to the rules -- no matter the fallout -- he would not have been faulted for it today.

And most ironic for Clinton supporters, Comey also used his Gmail for FBI business at times.