I think the anger expressed by both Presidents is similiar, but the actual circumstances were very different. If Trump fired Comey to create a cover-up, then he badly mis-judged the press and many of the public. Nixon was days away from being forced to resign; Trump has a longer leash, I believe. Unless, of course, he self-destructs further...
So, this is going to be all over the news, but suffice it to say I wanted to say this is "Nixonian".
For kicks I looked up "Nixonian", and found via NPR that the democrats already beat me to it.