The next time they stage a 4-man demonstration for some cause such as increased government transparency, they should also arrange for another 4 group of persons to stand 15 metres and demonstrate for some totally unrelated, and politically neutral cause (for example, "Be Kind to Your Pets").
They should organise both demonstrations in highly similar fashion. For example, both groups stand in the same way and behave in the same way, at the same time of the day. The only difference will be in the messages printed on their placards and T-shirts. For example, the first group's T-shirts may read "More Transparency in the CPF!" and the second group's T-shirts could read "Be Kind to Your Pets".
It will then be interesting to see the police reaction:
1. The police could zoom in on the CPF Transparency group but leave the Pet Kindness group alone. Which will cause people to say, "So how come the Pet Kindness group is not a public nuisance? They were behaving in exactly the same way as the CPF Transparency group."
2. The police could zoom in on both groups. Which will cause people to say, "The government is crazy! Now they are arresting cat lovers and dog lovers and bird lovers!"
3. The police could leave both groups alone. Which means that demonstrators would have found a way to prevent police interference.
In an even more devastating version of this brilliant Mr Wang idea, we replace the Animal Kindness group with a "We Love the Singapore Government" group. On their T-shirts and placards, the 2nd group will reflect the PAP's favourite messages like "Embrace Foreign Talent!"; "Work Till You're 62!" or "Our Ministers Deserve Higher Pay!".
Meanwhile, the first group will stand 15 metres away and carry on their peaceful, passive demonstration about the need for greater government transparency etc.
Then we wait and watch the police reaction, and watch for any differences in how the two groups are treated.