* Police put more officers on the streets of Lima
* Rising crime rate a top concern among Peruvians
* U.S. couple missing, embassy helping in search
By Terry Wade and Mitra Taj
LIMA, Feb 25 (Reuters) - The brazen killing of a journalist in broad daylight and a deadly robbery in Peru's financial district prompted President Ollanta Humala to put 1,000 more police on the streets of the capital on Monday, to tackle a rising sense of public insecurity.
Interior Minister Wilfredo Pedraza rushed to reassign officers from desk jobs and put them in patrol cars as outraged citizens demanded swift action after Luis Choy, a prominent photojournalist for El Comercio, Peru's main newspaper, was gunned down in front of his house in a middle-class district of Lima on Saturday afternoon.
Investigators have said Choy, 34, was murdered by a hitman but have not yet identified a motive. Police officials did not say how many officers in total would now be on patrol.