activator - (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription. 1  substance - the real physical matter of which a person or thing consists; DNA is the substance of our genes.
In 2006, in cases where police officers intentionally fired a gun at a person, they discharged 364 bullets and hit their target 103 times, for a hit rate of 28.3 percent, according to the departmentâs Firearms Discharge Report. The police shot and killed 13 people last year. In 2005, officers fired 472 times in the same circumstances, hitting their mark 82 times, for a 17.4 percent hit rate. They shot and killed nine people that year.
According to the Officer Down Memorial Page (ODMP), which keeps data on officer deaths going back over 100 years, 24 officers have been shot and killed by suspects this year. This puts the US on pace for 36 non-accidental, firearm-related police fatalities in 2015. Each one of such deaths is a tragedy for the officers killed, their families and the communities they serve, but this would be the lowest total in 25 years, aside from 2013 which saw 31 such deaths. Republicans step up attack campaign â and the target is Black Lives Matter