None of the listed offenses are universally crimes (in the US):
Speeding is frequently an infraction (eg, <a href="http://www.co.thurston.wa.us/distcrt/traffic.htm" rel="nofollow">http://www.co.thurston.wa.us/distcrt/traffic.htm</a>).
Underage drinking is often legal (<a href="http://en.wikipedia.org/wiki/Legal_drinking_age" rel="nofollow">http://en.wikipedia.org/wiki/Legal_drinking_age</a>).
Having a couple of drinks will almost never put you above the legal BAC (<a href="http://www.drunkdrivingdefense.com/general/bac.htm" rel="nofollow">http://www.drunkdrivingdefense.com/general/bac.htm</a>, <a href="http://www.ohsinc.com/drunk_driving_laws_blood_breath%20_alcohol_limits_chart.htm" rel="nofollow">http://www.ohsinc.com/drunk_driving_laws_blood_breath%20_alc...</a>).
Marijuana use is decriminalized in many states (although it remains a federal crime) (<a href="http://en.wikipedia.org/wiki/Legality_of_cannabis#United_States" rel="nofollow">http://en.wikipedia.org/wiki/Legality_of_cannabis#United_Sta...</a>).
Similar to "branded felons" there is also a group of "branded debtors." These are people living near the poverty line that credit card companies lure into huge debts. And since companies do not hire "branded debtors" (people with bad credit) there is a similar cycle of discrimination: inability to find work to pay debts and so on.