Full translation of sencha/anger:

"In order to protect your own interests, you killed [a person/people]!
We are guardians, dammit!  Even though you've already got power!
Who's it they're REALLY protecting those guys from?  Us?  Shame.  Know
shame.  We should all be ashamed."

Sentence-by-sentence translation, with the first line in Japanese, the
second in transliterated Roman characters, and the third translated
into English:

自分の利益を護るために、お前は人を殺した！
Jibun no rieki wo mamoru tame ni, omae wa hito wo koroshita!
In order to protect your own interests, you killed [a person/people]!

我々はガーディアンだぞ！
Wareware wa gaadian da zo!
We are guardians, dammit!

もう既にパワーを持っているのに！
Mou sudeni pawaa wo motte iru no ni!
Even though you've already got power!

彼らを本当は誰から護るのだ？
Karera wo hontou wa dare kara mamoru no da?
Who's it they're REALLY protecting those guys from?

我々か？
Wareware ka?
Us?

恥じ。恥じを知れ。
Haji.  Haji wo shire.
Shame.  Know shame.

我々全員恥じるべきだ。
Wareware zen'in hajirubeki da.
We should all be ashamed.