In 2015 Martin Luther King Day falls on Tuesday 19 January. There is a moving article on the website of the Martin Luther King, Jr. Center for Nonviolent Social Change by Dr King's widow, Coretta Scott King (who died in 2006), herself an important author, activist and civil rights leader.
In the worldwide Catholic Church, the World Day of Migrants and Refugees is celebrated in January each year, having been instituted in 1914 by Pope Pius X. In 2015 it falls on 18 January, which is also the Church's World Peace Day (and for many the first Day of the Week of Prayer for Christian Unity).
Without in any way wanting to mitigate the horror, grief and shock of the murders in Paris, I am growing weary of the disingenuity of so many in the media disclaiming the potentially violent power of the pen and the image.