Black men serial murdered - How many more?

Black men are the targets of recent police serial murders, but the "why" is a mystery to me.  Here is a tribute to some of them:

Violence against American black men has roots in the Civil Rights Movement of the 1950s and 60s, in the US, but these heinous murders were going on even before then.

These murders are serial killings. Harper Lee's "To Kill a Mockingbird", creates the experience of how deep rooted hatreds led to the murder of one Tom Robinson, one of the book's lead characters. Her classic book's plot and characters are loosely based on the author's observations of her family and neighbors, as well as on an event that occurred near her hometown in 1936, when she was 10 years old.

James Chaney, Andrew Goodman, Michael Schwerner

Died June 21, 1964

Of course there are dozens of other Civil Rights era martyrs.  Lately, the list has grown to include:

February 5, 1995 - February 26, 2012

Killed by George Zimmerman in a Stand Your Ground incident in Sanford, Florida

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Eric Garner died July 17, 2014 in Staten Island, New York City

Killed by a police officer who put him in a suffocating choke hold.

Garner died screaming, "I can't breathe".

Michael Brown May 20, 1996 - August 9, 2014

An 18-year-old black man, fatally shot by Darren Wilson, 28, a white Ferguson, Missouri police officer. 

Walter Scott murdered by a South Carolina white police officer named Michael Slager

A cell phone video of the killings, revealed this week, re-ignited national outcries surrounding police treatment of African-Americans and led to a murder charge against the police officer, Slager, who is white. Scott was black.

These serial killings can't continue. 

None of the African American men who were murdered, nor the Civil Rights martyrs, were carrying guns. Imagine how "turned the tables" would be on these senseless killings if any of the victims had weapons on their person? As America is becoming a gun culture nation, the Second amendment rights don't seem to be applied equally for all races of people. White men are being encouraged to carry guns for self defense, but when African American men or Civil Rights activists obtain weapons, they're considered to be "threatening".  

Tragically, the serial killing of African American men won't likely end just because we want the murders to stop.  These killings have been going on for many decades. Only God knows how many of them have gone unreported or were never solved.  

So, the rhetorical question is, "How many more?"
“I wanted you to see what real courage is, instead of getting the idea that courage is a man with a gun in his hand. It's when you know you're licked before you begin, but you begin anyway and see it through no matter what.
- Atticus Finch”
― Harper Lee, To Kill a Mockingbird