Now with the lawsuit over the NFL shows that it doesn't care about player safety, I knew the "bounty" mess was a cover up but this proves it. That fine wasn't enough and if he had hit Manning of Brady that way, Brooks would have been banned from the league

The fine was exactly what it should have been for a first offense roughing the passer. The fines are not arbitrary, especially the first couple.

Here is the NFL’s official 2013 schedule of fines:

(Posted fine amounts are for first offense/second offense)

Offense Against Game Official
Physical Contact with Official $26,250/$52,500
Verbal or other Non-Physical Offense $21,000/$42,000

Player Safety Rules and/or Flagrant Personal
Foul (including, without limitation): Suspension or fine; severity to be determined by degree of violation
(Fines listed are minimum)
Striking/Kicking/Kneeing $7,875/$15,750
Horse Collar Tackle $15,750/$31,500
Face Mask $7,875/$15,750
Leg Whip $15,750/$31,500
Late Hit $7,875/$15,750
Spearing $21,000/$42,000
Impermissible Use of the Helmet (including illegal launching) $21,000/$42,000
Initiating Contact with Crown of Helmet (new for 2013) $21,000/$42,000
Hit on Defenseless Player $21,000/$42,000
Blindside Block $21,000/$42,000
Roughing the Passer $15,750/$31,500
Low Block $7,875/$15,750
Chop Block $7,875/$15,750

Fighting
Fighting $26,250/$52,500
Unnecessarily Entering Fight Area (active involvement) $5,250/$10,500
Unnecessarily Entering Fight Area (no active involvement) $2,625/$10,500

Sportsmanship
Excessive Profanity; other Unsportsmanlike Conduct (e.g., toward opponent(s), game personnel, fans, etc.) $10,500/$21,000
Taunting $7,875/$10,500
Football Into Stands $5,250/$10,500

Uniform
Foreign Substances on Body/Uniform $7,875/$15,750
Chin Straps $7,875/$10,500
Personal Messages $5,250/$10,500
(Additional fines may be imposed on team management and coaching staffs for condoning, permitting, etc., violations in this area)
Other Uniform/Equipment Violations $5,250/$10,500