The US/CIA has a long history of inciting coups, rigging elections, and funding far right terror organizations across Latin America for matters similar or lesser than this [1]. I wouldn’t be so quick to dismiss this as unprovoked internal conflict. Especially given that only a year after this event, another election was held in which Luis Arce won in a landslide [2]. Luis Arce was importantly the finance minister for the Evo Morales administration [3]. There’s no evidence that popular support had ever waned for the Movement for Socialism in Bolivia. Yet Jeanine Añez was able to win in 2019 and exile Evo Morales in an election that involved, “irregularities and serious human rights abuses by security forces,” according to independent human rights organizations [4].

[1] https://en.m.wikipedia.org/wiki/United_States_involvement_in...

[2] https://en.m.wikipedia.org/wiki/2020_Bolivian_general_electi...

[3] https://en.m.wikipedia.org/wiki/Luis_Arce

[4] https://www.theguardian.com/world/2021/aug/17/bolivia-govern...