In Dogeaters, why was the Avila family considered "Communist"?Characters and their political affiliation

The Avila family is a left-ist leaning family. They have
been made this way by the corruption of the Philippine government. The story is supposed
to have taken place during the corrupt rule of the Marcos family. Imelda and Ferdinand
Marcos practically bankrupted the Philippines with their extravagant lifestyle and
disregard for the Philippine people, despite the fact that they claimed they were
motivated by their love for the people. In this novel, Senator Avila, his wife (a
professor) and his daughter, Daisy, all reject the government. They support freedom for
the Philippine people, but at this period of time, that support aligns them with the
“left” and the revolutionary movement. Senator Avila is assassinated and his daughter,
Daisy, runs away to join the revolutionary group fighting against the government. Daisy
is first captured, tortured and raped by General Ledesma, and this further “makes” her
into a guerilla.