May 15. Five protesters killed, 20 wounded by Israeli troops. Reports that UN peacekeepers in Lebanon are trying to stop protesters from getting to Israeli border.  Live video of Israeli tanks now laying smoke at Lebanese border fence, where protesters on Lebanon side are approaching, might attempt crossing.  Protesters waving Palestinian flags.  Live reporter says he can hear shots fired, says protesters are not armed. Reports that Israeli troops and tanks are building on Lebanese border.  Protester on Lebanon side of border wounded by Israeli soldier, protester was not on Israeli side of border.