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Comment by Animats | Hacker News Reader

All that military expertise in rapid wall-building is going to be useful. Already, there are concrete barriers around Trump Tower.[1]

[1] http://gothamist.com/2016/11/09/nypd_trump_tower_security.ph...

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Similar to the HESCO barriers mentioned above, another measure used there was simply a row of dump trucks full of sand:

https://www.reddit.com/r/nyc/comments/5bugud/sand_blockade_o...

They also used such trucks to prevent a vehicle ramming into the NYC Marathon.

I was half-expecting to see opponents of Trump putting concrete barriers around the tower as a protest against the Mexico wall.

Guerrilla fortification, you might call it...

They did very similar things in 2004, after recovering a laptop in Afghanistan with plans to attack several major NY buildings: https://en.wikipedia.org/wiki/2004_financial_buildings_plot#....

Note that these barriers are much less obtrusive than even a jersey barrier, this is something with which NYPD has plenty of experience in a very different light than the article

New York has been putting concrete barriers around things for well over a decade.

Well he said he's going to build a wall, maybe trump thinks anything below 42nd street is Mexico... ;)

Don't be ridiculous. Any New Yorker knows that "Mexico" doesn't start until you get above 96th St on the west side, or past about Lorimer Street on the L (and they've been pushing that back, it might be about Graham Ave by now).

I miss Bushwick sometimes. :)

Sounds like gentrification has killed the old Bushwick, right?

There were lots of those in place during the recent UN General Assembly

In the UK we've been using them for a long time to provide protection for people working on motorways i.e. separate traffic from lanes where work is going on

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