Complex sentence: Along with Knudsen, they staged their first non-violent protest against abortion at a hospital in Oslo, and later protested with symbolic burials of small coffins, and sending dolls drenched in ketchup to public figures and politicians.
Split into simpler sentences: Along with Knudsen, they staged their first non-violent protest against abortion at a hospital in Oslo. They later staged protests including symbolic burials of small coffins, and sending dolls drenched in ketchup to public figures and politicians.