add surrveillancerequired workshop

slides/surveillancerequired/surveillancerequired.md

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+# Surveillance required
+
+![Image](slides/surveillancerequired/1.jpeg)
+
+# Intro
+
+- Fixed line telephones
+- Mobile phones
+- Wifi
+- Smartphones
+
+
+# Social media
+
+- Facebook
+- Android apps
+
+# Open protocols
+
+- Email
+- IRC
+- Jabber (XMPP)
+- Retroshare, Matrix, Briar
+
+# Campaign
+
+- necessary
+- relatively easy
+
+# Thank you
+
+- Spread the word!