If someone wades in or wades into something, they get involved in a very determined and forceful way, often without thinking enough about the consequences of their actions.
They don't just listen sympathetically, they wade in with remarks like, 'If I wereyou...'. [VERB PARTICLE]
I waded in to help, but got kicked to the ground. [VERB PARTICLE]
Police waded into a crowd of protesters. [VERB PARTICLE noun]