Hi,
I think "
community participation" is a fixed expression (at least in the UK) so I wouldn't split it.
Have a look here, for instance.
As for events / activities, I understand "
event" as something which is done once in a while, something exceptional or unusual and which spans a short period of time, while the word "
activities" makes me think of something which is done on a regular basis, or which is done over a longer period.
So, I would not use the second sentence.
I hope I'm not misleading you. Wait for a native's confirmation.
