2Pac - Troublesome '96 (lots of energy here...)
Also, When I Get Free 2 is good.
Beanie Sigel - Ride for My
Beanie Sigel - Die
Beanie Sigel - What Your Life Like
Big L - Da Graveyard (oldschool, but again, lots of energy)
DMX - Catz Don't Know, nothing in your face about it really, but it's an anger track

Makavelli/2Pac - Bomb First
Mystikal - Jump
Memphis Bleek - Stay alive in NYC (nothing loud, but it's got a dark feel to it)
Mobb Deep - Shook Ones Pt 2
Noreaga - Grimey
Notorious BIG - Dead Wrong
ANYTHING BY ONYX 
Some good tracks by them - Shout, Slam (obviously), Betta off Dead
Beanie Sigel - Man's World
And an honorable mention

Rass Kass - Nature of the Threat (warning, not for everyone, controvertial content...)
Nothing amazingly "angry" here in this list, but it's stuff that has attitude to it.....