KERBALA, Iraq, June 28 (Reuters) - A member of Iraq's parliament, three of his bodyguards and his son were killed by a suicide car bomb attack on their convoy in the northern outskirts of Baghdad on Tuesday, police sources said. Dhari Ali al-Fayadh, a member of the ruling Shi'ite-dominated political alliance, was the second member of Iraq's newly elected parliament to be assassinated since the Shi'ite- and Kurdish-led government took office two months ago. Violence in Iraq has worsened dramatically since the government took office. Lamia Khadori, another parliamentarian, was gunned down at her home in April. Fayadh was...