[马克思 / 馬克思, Mǎ kè sīㄇㄚˇ ㄎㄜˋ ㄙ] Marx (name); Groucho Marx (the star of Duck Soup, 1933); Karl Marx (1818-1883), German socialist philosopher, political activist and founder of Marxism#8425
[李卜克内西 / 李卜克內西, Lǐ bo kè nèi xīㄌㄧˇ ㄅㄛ˙ ㄎㄜˋ ㄋㄟˋ ㄒㄧ] Wilhelm Liebknecht (1826-1900), political activist and founding member of the German Socialist Party SPD#309137
[海伦・凯勒 / 海倫・凱勒, Hǎi lún· Kǎi lēㄏㄞˇ ㄌㄨㄣˊ· ㄎㄞˇ ㄌㄜ] Helen Keller (1880-1968), famous American deafblind author and activist (whose story is told in biopic The Miracle Worker)