Sen. Panfilo "Ping" Lacson (Facebook photo) MANILA - Independent presidential candidate Senator Panfilo "Ping" Lacson on Sunday reiterated he is prepared to continue his campaign without a political party. He added that he is used to being a "mandirigma" (warrior) throughout his 50 years in public service, both as law enforcer and lawmaker. "I am used to being alone in a lonely crusade against a corrupt system for the past 50 years. Nonetheless I am going all-in and all the way. Once a warrior, always a warrior," he posted on his Twitter account @iampinglacson on Sunday. "I am used to starting a crusade, though it might be a difficult and lonely fight at first. The people would eventually see my point and join my cause. This is shown each time that my name has been put on the ballot, and the people have always renewed my mandate to serve them," he added. As chief of the Philippine National Police from 1999 to 2001, Lacson was known to a