sentences:  In the period since the beginning of the Ice March in February, the indiscriminate use of Red Terror by the Don Soviet had produced a wholesale reaction among the Cossack population, even among those hostile to the Whites.Small-scale risings against the Communists began to grow in intensity, especially around the area of Novocherkassk.During April, as many as 10,000 cavalrymen gathered at Zaplavskaya, whence they advanced to recapture the Don capital.