In the present Convention, genocide means any of the following acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group, as such:
(a) Killing members of the group;
(b) Causing serious bodily or mental harm to members of the group;
(c) Deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part;
(d) Imposing measures intended to prevent births within the group;
(e) Forcibly transferring children of the group to another group.
If the target is to destroy a group as a group and any of these acts are committed, it is genocide. Mass murder is the "prevalent" act, but it is not a requirement for genocide.
"escalation" of unarmed people bringing food to people being starved on purpose, knowing they will probably be assaulted and abducted by armed military gangs on the way.
The escalation is coming from the armed thugs assaulting the ships, not the other way round.
The definition of genocide by the UN convention:
If the target is to destroy a group as a group and any of these acts are committed, it is genocide. Mass murder is the "prevalent" act, but it is not a requirement for genocide.