Iraultza

Iraultza (Basque for Revolution) was a small Basque militant armed group of leftist tendency, active between 1982 and 1996. as a response to the suppression of the Basque resistance movement. It was thought to be a group of less than 50 people based in Bilbao, largely focused on the destruction of property, particularly those of American multinational corporations and against other smaller Spanish companies involved in labor disputes, in support of Workers' self-management and mobilization, although one of its attacks was responsible for the death of one individual and several for minor injuries of others. According to El Pais, It was thought to be responsible for over 210 attacks during its existence
The group is also known for being described by the United States government as "probably [having] committed more bombings against American business interests than any other European terrorist group".
Origin and motivations.
The origins of Iraultza have been speculated by several including the James Baker/George P. Shultz-era United States Department of State, and El Pais as being formed of former members of Communist Movement of Euskadi, although the movement itself denied any link between the two organisations. 
The group was reported as not having motives of attacking civilians, only property. Although press had reported a manifesto had been distributed by Iraultza after its formation, their motivations were not widely reported, although they were speculated upon. The ideology of Iraultza based upon their attacks conforms to the pattern of industrial sabotage against mainly American multinational corporations, banks, and corporations or institutions which were perceived as anti-worker or anti-populist Iraultza also espoused anti-capitalistic ideological views.
Deaths.
The group itself.
The majority of the deaths caused by Iraultza were to their own members while placing bombs, with seven members in total dying. 
On 13 December 1986, an individual was killed on Roncesvalles Avenue in Pamplona, Navarre who was later identified as Juan Carlos Gallardo. He had placed a bomb next to the car of an industrialist with the surname Figanda, whose sausage company was involved in a strong labor conflict at the time, with the company in question presenting workers with termination notices. The device exploded next to the car, killing Gallardo. 
After Gallardo's death, a moment of silence and march through was held by over 3000 people, who also were in attendance to protest the death of Mikel Zabalza. The protest went through the streets of Pamplona, walking past the site of Gallardo's death, and some among the crowd chanted support for Iraultza and ETA, although relatives of Zabalza and other residents of Orbaizeta remained quiet.
On 1 May 1991, police confirmed that they had found several people deceased in the remains of SEAT 131 car, who had been killed in an explosion, and identified via their identity documents María Rosa Diez Sáez (30) from Barakaldo and Jesús Fernández Miguel (40), the owner of the car, and found bank savings account documents from another person, reported as Soledad Múgica Areitioaurtena (40) from Ermua, in the wreckage. El Pais stated that Sáez and Areitioaurtena were involved in radical assemblies, but that Miguel was a person unknown to authorities.
The following day, Iraultza contacted the newspaper "Egin" to confirm that the three fatalities were members of Iraultza. Police sources stated that the three deceased had just placed devices which had detonated in Bilbao and Barakaldo before they were killed manipulating an explosive device.
José Miguel Moros Peña.
According to the newspaper El Pais, on Friday 27 June 1986, José Miguel Moros Peña (18), a resident of Portagalete and construction worker for Urgandía, a subcontractor for firms "Dragados" and "OCP Construcciones" (As of January 2019, a part of ACS Group) was attempting to start a piece of drill machinery (later reported as a crane) at around 7:50 am when the bomb attached to it exploded, blowing off his left forearm and causing other serious injuries that later resulted in his death. The bomb's supposed clock mechanism, apparently failed to detonate the bomb at its intended time, but the movement of the drill machinery was thought to have initiated the detonation.
An anonymous call was made prior to the detonation to the Santurzi Municipal Police at 11:45 pm on Monday 23 June 1986, and a bomb squad was sent out to check but reportedly found nothing. The police chief of Bilbao later stated that the police considered the call to be one of many false alarms, and did not consider checking the area again in the light of day.