This is not so much to decry what we have lost, after all, Lincoln, McKinley, Garfield and Kennedy were killed and other presidents shot and wounded while in office so there is no safe and secure time in the past even if  we felt more secure. No this is about how simply taking a photo, this of the "other side" of the White House, is more difficult today in many of the parks as more places are off-limits where you could once go. This is an extreme case. The chain barrier, then service vehicles, then concrete barriers, then emergency vehicles, then double fence, walkway now only for officials and a newly multi-barbed and higher fence. Lots of "stuff" in the way.