I think I saw the flag of the Pathet Lao in the second picture, too.You're correct. To be honest, I had never heard of them before.
Flag of the Pathet Lao (on left)
"The Pathet Lao "Lao Nation"[1]) was a communist political movement and organization in Laos, formed in the mid-20th century. The group was ultimately successful in assuming political power in 1975, after the Laotian Civil War. The Pathet Lao were always closely associated with Vietnamese communists. During the civil war, it was effectively organized, equipped and even led by the Army of North Vietnam. They fought against the anti-communist forces in the Vietnam War."--wikipedia
Yes, that’s how I remember the Laotian part of the war. The Pathet Lao were the fourth member of the Indochinese communist team, along with the North Vietnamese armed forces, the Viet Cong, and the Khmer Rouge. If you haven’t heard of the Pathet Lao, it’s because they didn’t have to fight as hard as the others. In fact, the 1973 cease-fire and coalition government established in Laos looked like they were going to hold. But when the rightist (anticommunist) members of the coalition heard that Saigon had fallen, they suddenly quit and fled the country, allowing the Pathet Lao to peacefully take over the part of Laos they didn’t have already.