Note! Selecting this mission is recommended only if you follow the evil path, i.e. you strive for amassing Bad Karma. It is worth knowing that starting this mission lock access to mission 7a (Trash the Stash), which has been prepared with playing, as the main character, in mind.
The starting point, for this mission is on one of the rooftops in the central part of the Market District and you need to be careful here, because there is a D.U.P. base in the vicinity (as long as you have not destroyed it). After you reach the rooftop, listen to the conversation with Fetch, which concerns attacking the successive groups of protesters, who are voicing up against bio-terrorists. The first group is to the West of here and that is where you need to go. After you get there, use e.g. the Cinder Blast (R2) to attack the protesters (you do not need to kill all of them, it is enough to stop the protest).
You need to, keep in mind that, by attacking the activists you will attract attention of the nearby D.U.P. soldiers so, try to start eliminating them as soon as possible. What makes things much easier is the help from Fetch but, in spite of that, it is a good idea to watch out, retreat whenever Delsin sustains heavier injuries and replenish power level on a regular basis (you can rely on either Smoke or Neon).
The second phase of the plan assumes that you attack the three group of protesters and the purpose of this is to smoke the leader of the activists out. You can reach the protest sites in any order that you want but, to keep things orderly, I recommend that you first go to the Seattle Centre district. Just like earlier, murder at least several activists, thanks to which the protest will end. You should to expect a more resolute reaction, on the part of the D.U.P. soldiers, because you will have to defeat here, among others, an elite opponent with a minigun (remember to use the best of your attacks and to finish out the enemy soldier, after you finally weaken him).
Now, you need to get to the manifestation site in the Eastern part of the Georgetown district. Deal with the activists and start attacking the enemy units. In this particular case, you need to watch out for, at least, one elite enemy that resembles a scientist, because one of his powers is immobilizing Delsin, which exposes him to attacks by the remaining opponents. A good piece of news is that you can still count on Fetch's support.
The final manifest is in the South-Eastern part of the Market District and, if you still have not destroyed the base in the vicinity, the safest way to reach the site is by taking the route alongside the water. During the fights, you should, again, focus on the elite opponents and do not come too close to the D.U.P. base, to prevent encouraging more soldiers to arrive. You need to be very careful here, because Delsin cannot, unfortunately, count on Fetch to help him and, as a result, all the attention will center around him.
After the fights end, replenish your powers. Also, listen to the conversation with Fetch, who will inform Delsin about new cues of the activist leader and she will ask you to reach the Pioneer tunnel. The entrance to the tunnel is located on the border between the Market District and Georgetown and it has been shown in the above screenshot.
Enter the tunnel and go East. Along your way, it is going to be necessary to eliminate more enemy soldiers. I recommend that, in this part of the mission, you switch to Smoke power because, although there are several neons in the area, it is going to be much easier to you to regenerate Delsin's powers by running up to blazing cars. This will also allow you to launch the most powerful attack (R1), which will prove useful for the elimination of the better-armored enemies (a new elite opponent with a minigun, among others).
After you reach the barricaded tunnel exit, wait for Fetch to unlock access for you. Exit the tunnel and allow the main character pretend that he gives up. Wait for a good moment now, and launch the Orbital Drop attack (the down button on the d-pad), thanks to which you will attack them by surprise and get rid of them, without any problems.
You can now start the final battle of this mission. At the beginning, try to blow up the incoming APCs and later on, focus on the successive elite opponents and snipers up on the rooftops. You can use any power that you want to but, you should keep an eye on your health. After you win the fight, watch the cutscene of the execution on the activist leader, which will end this mission. You can now focus on another main mission - The Test.