How does gregor try to stop grete from removing the picture of the woman from his room?

In Franz Kafka's Metamorphosis, the picture of Venus in Furs hanging from the wall of Gregor symbolizes the past that he holds, desiring wealth and beauty. When her sister and mother try to remove the objects from the room, Gregor stops her sister  removing the picture by clinging to it. The picture is his last destination for his past like a drug for a drug-addict. It is a last element from his life before the transformation.

the speech this question is referring to is president kennedy's special message to the congress on urgent national needs, may 25, 1961

kennedy responds in a very direct and concrete way to those thinking that communism is a positive system:

"yet their aggression is more often concealed than open. they have fired no missiles; and their troops are seldom seen. they send arms, agitators, aid, technicians and propaganda to every troubled area. but where fighting is required, it is usually done by others--by guerrillas striking at night, by assassins striking alone--assassins who have taken the lives of four thousand civil officers in the last twelve months in vietnam alone--by subversives and saboteurs and insurrectionists, who in some cases control whole areas inside of independent nations." (kennedy)

president kennedy presents communism as cowardly, as a hidden and treacherous weapon that strikes from the shadows like thieves, he represents the system as not even being capable of showing and open and overt attack or confrontation. to finish up the response, he expresses that the system attacks even a country's idependence and freedom.