People gather along a street during the funeral procession of Iran's slain Supreme Leader Ali Khamenei and his family members in Tehran July 6, 2026. The funeral procession for Iran's late supreme leader Ali Khamenei began in Tehran on July 6, state television reported, as authorities prepared for crowds that could rival those that turned out for his predecessor nearly four decades ago. (Photo by ATTA KENARE / AFP via Getty Images) /

People gather along a street during the funeral procession of Iran's slain Supreme Leader Ali Khamenei and his family members in Tehran July 6, 2026. The funeral procession for Iran's late supreme leader Ali Khamenei began in Tehran on July 6, state television reported, as authorities prepared for crowds that could rival those that turned out for his predecessor nearly four decades ago. (Photo by ATTA KENARE / AFP via Getty Images) /

People gather along a street during the funeral procession of Iran's slain Supreme Leader Ali Khamenei and his family members in Tehran July 6, 2026. The funeral procession for Iran's late supreme leader Ali Khamenei began in Tehran on July 6, state television reported, as authorities prepared for crowds that could rival those that turned out for his predecessor nearly four decades ago. (Photo by ATTA KENARE / AFP via Getty Images) /

People gather along a street during the funeral procession of Iran's slain Supreme Leader Ali Khamenei and his family members in Tehran July 6, 2026. The funeral procession for Iran's late supreme leader Ali Khamenei began in Tehran on July 6, state television reported, as authorities prepared for crowds that could rival those that turned out for his predecessor nearly four decades ago. (Photo by ATTA KENARE / AFP via Getty Images) /

People gather along a street during the funeral procession of Iran's slain Supreme Leader Ali Khamenei and his family members in Tehran July 6, 2026. The funeral procession for Iran's late supreme leader Ali Khamenei began in Tehran on July 6, state television reported, as authorities prepared for crowds that could rival those that turned out for his predecessor nearly four decades ago. (Photo by ATTA KENARE / AFP via Getty Images) /

People gather along a street during the funeral procession of Iran's slain Supreme Leader Ali Khamenei and his family members in Tehran July 6, 2026. The funeral procession for Iran's late supreme leader Ali Khamenei began in Tehran on July 6, state television reported, as authorities prepared for crowds that could rival those that turned out for his predecessor nearly four decades ago. (Photo by ATTA KENARE / AFP via Getty Images) /

People gather along a street during the funeral procession of Iran's slain Supreme Leader Ali Khamenei and his family members in Tehran July 6, 2026. The funeral procession for Iran's late supreme leader Ali Khamenei began in Tehran on July 6, state television reported, as authorities prepared for crowds that could rival those that turned out for his predecessor nearly four decades ago. (Photo by ATTA KENARE / AFP via Getty Images) /

(COMBO) This combination of pictures created on July 6, 2026, shows mourners attending Ayatollah Ruhollah Khomeini's funeral ceremony in Tehran on June 6, 1989 (L) and mourners gathering along a street during the funeral procession of Iran's slain supreme leader Ali Khamenei and his family members in Tehran on July 6, 2026. The funeral procession for Iran's late supreme leader Ali Khamenei began in Tehran on July 6, 2026, state television reported, as authorities prepared for crowds that could rival those that turned out for his predecessor nearly four decades ago. Authorities are hoping to avoid a repeat of the chaos that marred the 1989 funeral of Khamenei's predecessor Ayatollah Ruhollah Khomeini, which drew an estimated 10 million people, according to state news agency IRNA. (Photo by AFP via Getty Images) /