Police said normal life was affected with protesters blocking movement of vehicles, even private vehicles including cars and two-wheelers--in many parts of the district.
Kerala State Road Transport Corporation services were affected with protesters pelting stones at the buses in some parts of the district, police said.
CSDS leaders had yesterday called for the district hartal accusing the CPI(M) of unleashing planned attacks on Dalits in the district.
SFI has rejected allegations by CSDS leaders.
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