1. I think riot groups are already infiltrated so propably not. Maybe some common leftists but they won´t do shit imo. Too unorganized.
2. War somewhere outside of US doesn´t affect you as much I think.
3. Supply chain cut off ? good point https://www.zerohedge.com/economics/global-economy-heading-mother-all-supply-chain-shocks-china-locks-down-ports
4. This one is worst I think. Random sleeper could ruin everything.

3. Supply chain cut off ?

https://www.zerohedge.com/economics/global-economy-heading-mother-all-supply-chain-shocks-china-locks-down-ports