This latest cycle of violence began five years ago , when street gangs with roots in Los Angeles -- especially the Mara 18 and the Mara Salvatruchas , known as MS-13 -- began to spread across Central America and southern Mexico , creating the same kind of havoc in poor neighborhoods here as they once did in places like Compton and Watts .
Watts /location/neighborhood/neighborhood_of Los Angeles
Los Angeles /location/location/contains Watts
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Watts
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Los Angeles
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Los Angeles
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Watts
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