More than 2,000 college and high school students walked out of their classes, July 18 to protest the worsening economic crisis. They vowed to conduct more of these actions until Mrs. Gloria Macapagal-Arroyo steps down. BY JEFFREY OCAMPO Contributed to (Bulatlat.com) Vol. VIII, No. 24, July 20-26, 2008 On July 18, more than 2,000 students…