Tarek, who asked to withhold his last name for fear of retribution, is spearheading an awareness campaign.
The New Haven-based group has spent a decade investigating human-rights abuses in Iran and is spearheading the project.
c.1400, from spear (n.1) + head (n.). Figurative sense of "leading element" (of an attack, movement, etc.) is attested from 1893; the verb in this sense is recorded from 1938. Related: Spearheaded; spearheading.