As said by Jim Garrison played by Kevin Costner in JFK:
I have here some $8,000 in these letters sent to my office from all over the country – quarters, dimes, dollar bills from housewives, plumbers, car salesmen, teachers, invalids … These are the people who cannot afford to send money but do, these are the ones who drive the cabs, who nurse in the hospitals, who see their kids go to Vietnam. Why? Because they care, because they want to know the truth – because they want their country back, because it belongs to us the people as long as the people got the guts to fight for what they believe in!