Muhammad Bassiri was born in a Sahrawi family in Tan-Tan. In 1957 he left Tan-Tan for the newly independent Morocco to attend school in Marrakesh, and proceeded to study the Quran & Arabic in Cairo, Egypt and Journalism in Damascus, Syria, where he get in touch with the Panarabism ideology. On returning to Morocco in 1966, he founded Al-Shihab, a Sahrawi nationalist newspaper. He also worked as a journalist in Casablanca. In March 1968 he was allowed to enter to Spanish Sahara, because of the closing of the newspaper by Moroccan authorities in late 1967, and settled in the city ofSmara as a Quranic teacher. It was there he started to organize the anti-colonial movement known as the movement of liberation calling for end of Spanish occupation of the Sahara. Bassiri stressed non-violence and wanted to bring about change through democratic action, although the ruthless colonial rule imposed by Francisco Franco's Spain forced the Harakat Tahrir to remain clandestine. Bassiri didn't want a precipitated independence, but to negotiate with the Spanish authorities
Disappearance
On early June 17, 1970 the organization appeared openly in a peaceful demonstration against the Spanish colonial rule, asking for autonomy and self-determination in the Zemla neighborhood of El-Aaiun, in parallel to an official Francoist demonstration. The Spanish governor-general of the colony, GeneralJosé María Pérez de Lema y Tejero, went to Zemla to discuss with the organizers of the demonstration, but did not reach an agreement to make them leave the place and join the official demonstration. Tensions escalated between the growing mass of Sahrawi protesters and the Spanish reservist soldiers, who were stoned-throwed after detaining 3 speakers of the protest, answered opening fire on the mass at 17:30 PM. Disturbance continued until 19:00 PM, when troops of the Tercio "Juan de Austria" of the Spanish Legion brutally put down what remained of the protesters. The events were seen by the Spanish authorities as a defiance to the official demonstration organized by the General governor, made to show the world the supposed Sahrawi support to the Spanish regime and refusal to the UN involvement. These events have been dubbed the Zemla Intifada by Sahrawis. Bassiri, who had abandoned Zemla before violence erupted, was informed of the events. He was offered to escape to Mauritania by car, but he refused it. According to Salem Lebser, he replied: "Nobody could say I'm an adventurer who has led people to death and then disappeared..I already fled once Morocco, where I felt like a stranger. But I would not fled from my own land". Bassiri was tracked down that night, detained around 03:00 AM of June 18, and jailed at El Aaiun Territorial Police headquarters. On June 19, and after being allegedly tortured, he testified before the Spanish military authorities. A photograph of him registering before the "Habs Shargui" prison authorities is the last known trace of him. Later, he was allegedly moved to "Sidi Buya", the Spanish Legion headquarters in El Aaiun. According to testimonies given by three different persons to then apostolic prefect to Spanish Sahara Félix Erviti Barcelona, Bassiri was executed by a Spanish Legion patrol in the dunes surrounding El Aaiun on the night of 29 July 1970, although Spanish authorities of the time claimed that he had been expelled from the territory to Morocco on that date, moreover they also claimed later that Bassiri had entered Spanish Sahara illegally from Algeria in September 1970. Spanish colonial authorities even claimed in 1971 that Bassiri had died on the Skhirat coup d'état against Hassan II. Present-day Sahrawi nationalists such as the Polisario Front honor him as the father of the modern Sahrawi independence struggle, as well as the first of the Sahrawi "disappeared" and a national martyr for the Liberty.