What dose the author mean when he writes that luck snapped to attention

Anne frank was a very difficult person because she would never listen to her moms sometimes her dad even though he was her favorite and in times like that it would make it harder for there parents and other people in the annex to deal with her and since they were just stuck in there the couldn’t do anything but grounding her but even that didn’t work. hope that :

The situation that best  exemplifies the theme of power in  the tragedy of julius caesar,  is when brutus and cassius had a heated argument regarding the practice of giving and accepting bribes. such practice is an absolute weakness and a bad indication of a governance.