I intend to do what little one man can do to awaken the public conscience, and in the meantime I am not frightened by your menaces. I am not a giant physically; I shrink from pain and filth and vermin and foul air, like any other man of refinement; also, I freely admit, when I see a line of a hundred policemen with drawn revolvers flung across a street to keep anyone from coming onto private property to hear my feeble voice, I am somewhat disturbed in my nerves. But I have a conscience and a religious faith, and I know that our liberties were not won without suffering, and may be lost again through our cowardice. I intend to do my duty to my country.

Upton Sinclair (1878–1968) American writer, journalist, activist, politician

Letter to the Louis D. Oaks, Los Angeles Chief of Police (17 May 1923)
    (Source)

Reprinted in his Autobiography (1962).