Related Clues:

• M.L.K. Jr., e.g.
• Clerical address, for short
• Hit the accelerator
• Gun on the street?
• Race   
• Minister, slangily
• Crank up
• Fire up the engine
• Part of IRS: Abbr.
• Hasten the pace of
• Flock leader, familiarly
• MLK's title
• Minister, briefly
• Intensify, with ''up''
• Cleric's title (Abbr.)