Verkkojuly 9, 2016 11:53 am pt.
The massacre that left five dallas police officers dead comes 46 years after a notorious ambush in santa clarita that left four california.
Verkkobut why do such incidents keep happening?
We've asked two people who are deeply involved in these issues.
One is former st.
Verkkothe latest in a string of killings of unarmed black americans, the incident once again raises questions about training and the use of force by.