Ses'khona People's Rights Movement fears that its leader, Andile Lili, might be "finished off" while he is in a critical condition at the Tygerberg Hospital in Cape Town.
Lili was shot by two men on Wednesday night while in his car outside his home in Khayelitsha, Cape Town.
Last year, Lili led marches in which his supporters dumped human faeces at Cape Town International Airport and at the Western Cape legislature.
Ses'khona spokesman Sithembele Majova believes Lili's shooting was politically motivated.
He feared the "assassins" might come back to kill Lili. The movement has "reinforced" security around its leader as he recuperates in hospital.
"We are feeling he is not safe. We are doing this [security reinforcement] by ourselves. We didn't consult [Tygerberg Hospital] because they tried to be hostile towards us," said Majova.
Mark van der Heever, of the provincial health department, said steps had been taken to ensure the safety of the patient.
"Our focus remains his medical condition and the provision of care to him," he said.
Lili's shooting came on the eve of a planned march to the offices of the provincial ANC. This had raised tensions between the party, especially secretary Songezo Mjongile, and Ses'khona.
Yesterday, as they called off the march, Ses'khona members called for Mjongile's removal from office and accused him of "being in bed" with Western Cape Premier Helen Zille.
They gathered at Cape Town Station, where they handed a memorandum to the Passenger Rail Agency of South Africa, demanding jobs for their members.
Ses'khona claims Mjongile is trying to block a job-creation project that the movement has with the agency.
The ANC and the DA have accused Ses'khona of exploiting the vulnerable by promising non-existent jobs.
Mjongile yesterday denied the allegations about jobs and warned Ses'khona leaders not to make reckless statements about Lili's shooting.
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