Complex sentence: Sterling Berry observed that the home's most objectionable feature was admittance of Roman Catholics into a proselytising institution and successfully pressurized Bethany Home's Management Committee into ceasing admission of Roman Catholics.
Split into simpler sentences: Sterling Berry observed that the home's most objectionable feature was admittance of Roman Catholics into a proselytising institution. He successfully pressurized Bethany Home's Managing Committee into ceasing admission of Roman Catholics.