The state capitalist regimes of eastern europe were brought down by societies. Which rejected the unethical corrupt and extralegal nature of these degenerate Marxist regimes. If a bunch of Marxists in Latin America choose to take hostages that's terrorism.
Hostage taking means a willingness to kill to advance a political agenda.
It is an act of terror against the individuals and their families who are the pawns in this sick game. It doesn't matter who or what they have done. As an anarchist I reject absolutely the right of anyone, state functionary, judge, or 'revolutionary guerilla' to decide who shall live and who shall die. I hope this incident does not end in bloodshed. As an anarchist I believe that the end does not justify the means.