The rising hostility seems a delayed reaction to a slow economic recovery and high unemployment.
They also faulted Homeland Security Secretary Michael Chertoff for a delayed reaction.
And there remains the possibility of a delayed reaction to current price levels, as consumers, particularly profligate Americans, turn to less thirsty cars and appliances.
Similarly, a former college athlete who becomes angry and irritable in his 40s could be suffering a midlife crisis or delayed reaction to head injuries sustained decades earlier.
Over the course of the last two months, we have repeatedly seen the credit market be a huge tell for equities, usually in a delayed reaction type of scenario.
The beating of Mr Denny was a long delayed reaction to another brutal beating, in March 1991, also caught on video-tape: that of a black motorist, Rodney King, by four white police officers.
"Some core Democratic groups -- chiefly women and lower-income Americans -- may be coming back, and since those groups are the ones most affected by health care, it's possible that is a delayed reaction to new law, " CNN Polling Director Keating Holland said.
But the delayed reaction - from expressing disappointment, to going on television 48 hours later to denounce the outcome as "bad for Britain"' - was not simply because he was irritated by the Eurosceptics, or was under pressure from some in his party for his initially lukewarm response.
For some infants, a milk allergy can't be missed - as soon as the baby has infant formula he develops hives and swelling, but for others the reaction is delayed and causes chronic symptoms.
But the reaction may be a delayed one.
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