Complex sentence: On 29 May 2011, Wong and schoolmate Ivan Lam established Scholarism, a student activist group which initially just handed out leaflets against the newly announced moral and national education (MNE).
Split into simpler sentences: On 29 May 2011, Wong and schoolmate Ivan Lam established Scholarism, a student activist group. In its early days, the group was mainly responsible for distributing leaflets against the newly announced moral and national education (MNE).