catherine t. macahur foundation, committe to building a more just, verdant anpeaceful world. and by the ford foundation: workinwith visionaries on the frontlines of social change worldwide. additional support is provided by the abrams foundation committed to excellence in journalism. the park foundation, dedicated to heightening public awareness of critical issues. the john and helen glessner family trust. supporting trustworthy journalism that informs and inspires.si the heisinns foundation: unlocking knowledge, opportunity, and possibilities. and by the frontline journalism fund, with major support from jon and jo ann hagler. ♪ >> momo (in cantones: (sniffles) (phone camera clicks) (sniffles) ♪ (sniffles) (peopltalking in background) >> narrar: it's the fourth month of pro-democracy demonstrations in hong kong. (people shouting) protesters have surrounded theol car of an off-duty pe officer. >> man (shouting): >> narrator: the city is in turmoil. >> man: >> officer >> man: (gun fires, people shouting) >> man: >> narrator: the officer shootsn jures a 14-year-old protester. (