A protester who works in the media lit himself on fire outside of the White House during an anti-Israel protest on Saturday evening, disturbing video shows. The man, identified as photojournalist Samuel Mena Jr, can be seen screaming in pain after he set his left arm ablaze in the middle of the street as shocked police officers and bystanders rush over to help, according to one clip. Mena holds his left arm — engulfed in flames — high in the air to show others as several people quickly douse him with water and beat out the flames with pieces of...